Nominatim/data-sources/wikipedia-wikidata/wikidata_places.md
TC Haddad 5e45e0b3d7 Gsoc2019 contributions for adding Wikidata to Nominatim (#1475)
Complete rewrite of wikipedia processing scripts, addition of processing wikidata, new data source, new documentation by @tchaddad during Google Summer of Code 2019 project.
2019-10-06 15:56:39 +08:00

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Markdown

## Wikidata place types and related OSM Tags
Wikidata does not have any official ontologies, however the [DBpedia project](https://wiki.dbpedia.org/) has created an [ontology](https://wiki.dbpedia.org/services-resources/ontology) that covered [place types](http://mappings.dbpedia.org/server/ontology/classes/#Place). The table below used the DBpedia place ontology as a starting point, and is provided as a cross-reference to the relevant OSM tags.
The Wikidata place types listed in the table below can be used in conjunction with the [Wikidata Query Service](https://query.wikidata.org/) to retrieve instances of those place types from the Wikidata knowledgebase.
```
SELECT ?item ?lat ?lon
WHERE {
?item wdt:P31*/wdt:P279*wd:Q9430; wdt:P625 ?pt.
?item p:P625?loc.
?loc psv:P625?cnode.
?cnode wikibase:geoLatitude?lat.
?cnode wikibase:geoLongitude?lon.
}
```
An example json return for all instances of the Wikidata item "Q9430" (Ocean) can be seen at [json](https://query.wikidata.org/bigdata/namespace/wdq/sparql?format=json&query=SELECT?item?lat?lon%20WHERE{?item%20wdt:P31*/wdt:P279*wd:Q9430;wdt:P625?pt.?item%20p:P625?loc.?loc%20psv:P625?cnode.?cnode%20wikibase:geoLatitude?lat.?cnode%20wikibase:geoLongitude?lon.})
**NOTE** the OSM tags listed are those listed in the wikidata entries, and not all the possible matches for tags within OSM.
title | concept | OSM Tag |
-----------|---------------------------------------|------------------|
[Q17334923](https://www.wikidata.org/entity/Q17334923) | Location | |
[Q811979](https://www.wikidata.org/entity/Q811979) | Architectural Structure | |
[Q194195](https://www.wikidata.org/entity/Q194195) | Amusement park |
[Q204832](https://www.wikidata.org/entity/Q204832) | Roller coaster | [attraction=roller_coaster](https://wiki.openstreetmap.org/wiki/Tag:attraction=roller_coaster) |
[Q2870166](https://www.wikidata.org/entity/Q2870166) | Water ride | |
[Q641226](https://www.wikidata.org/entity/Q641226) | Arena | [amenity=events_centre](https://wiki.openstreetmap.org/wiki/Tag:amenity=events_centre) |
[Q41176](https://www.wikidata.org/entity/Q41176) | Building | [building=yes](https://wiki.openstreetmap.org/wiki/Key:building) |
[Q1303167](https://www.wikidata.org/entity/Q1303167) | Barn | [building=barn](https://wiki.openstreetmap.org/wiki/Tag:building=barn) |
[Q655686](https://www.wikidata.org/entity/Q655686) | Commercial building | [building=commercial](https://wiki.openstreetmap.org/wiki/Tag:building=commercial) |
[Q4830453](https://www.wikidata.org/entity/Q4830453) | Business | |
[Q7075](https://www.wikidata.org/entity/Q7075) | Library | [amenity=library](https://wiki.openstreetmap.org/wiki/Tag:amenity=library) |
[Q133215](https://www.wikidata.org/entity/Q133215) | Casino | [amenity=casino](https://wiki.openstreetmap.org/wiki/Tag:amenity=casino) |
[Q23413](https://www.wikidata.org/entity/Q23413) | Castle | [historic=castle](https://wiki.openstreetmap.org/wiki/Tag:historic=castle) |
[Q83405](https://www.wikidata.org/entity/Q83405) | Factory | |
[Q53060](https://www.wikidata.org/entity/Q53060) | Gate | [barrier=gate](https://wiki.openstreetmap.org/wiki/Tag:barrier=gate) |cnode%20wikibase:geoLatitude?lat.?cnode%20wikibase:geoLongitude?lon.})
[Q11755880](https://www.wikidata.org/entity/Q11755880) | Residential Building | [building=residential](https://wiki.openstreetmap.org/wiki/Tag:building=residential) |
[Q3947](https://www.wikidata.org/entity/Q3947) | House | [building=house](https://wiki.openstreetmap.org/wiki/Tag:building=house) |
[Q35112127](https://www.wikidata.org/entity/Q35112127) | Historic Building | |
[Q5773747](https://www.wikidata.org/entity/Q5773747) | Historic house | |
[Q38723](https://www.wikidata.org/entity/Q38723) | Higher Education Institution |
[Q3914](https://www.wikidata.org/entity/Q3914) | School | [amenity=school](https://wiki.openstreetmap.org/wiki/Tag:amenity=school) |
[Q9842](https://www.wikidata.org/entity/Q9842) | Primary school | |
[Q159334](https://www.wikidata.org/entity/Q159334) | Secondary school | |
[Q16917](https://www.wikidata.org/entity/Q16917) | Hospital | [amenity=hospital](https://wiki.openstreetmap.org/wiki/Tag:amenity=hospital), [healthcare=hospital](https://wiki.openstreetmap.org/wiki/Tag:healthcare=hospital), [building=hospital](https://wiki.openstreetmap.org/wiki/Tag:building=hospital) |
[Q27686](https://www.wikidata.org/entity/Q27686) | Hotel | [tourism=hotel](https://wiki.openstreetmap.org/wiki/Tag:tourism=hotel), [building=hotel](https://wiki.openstreetmap.org/wiki/Tag:building=hotel) |
[Q33506](https://www.wikidata.org/entity/Q33506) | Museum | [tourism=museum](https://wiki.openstreetmap.org/wiki/Tag:tourism=museum) |
[Q40357](https://www.wikidata.org/entity/Q40357) | Prison | [amenity=prison](https://wiki.openstreetmap.org/wiki/Tag:amenity=prison) |
[Q24398318](https://www.wikidata.org/entity/Q24398318) | Religious Building | |
[Q160742](https://www.wikidata.org/entity/Q160742) | Abbey | |
[Q16970](https://www.wikidata.org/entity/Q16970) | Church (building) | [building=church](https://wiki.openstreetmap.org/wiki/Tag:building=church) |
[Q44613](https://www.wikidata.org/entity/Q44613) | Monastery | [amenity=monastery](https://wiki.openstreetmap.org/wiki/Tag:amenity=monastery) |
[Q32815](https://www.wikidata.org/entity/Q32815) | Mosque | [building=mosque](https://wiki.openstreetmap.org/wiki/Tag:building=mosque) |
[Q697295](https://www.wikidata.org/entity/Q697295) | Shrine | [building=shrine](https://wiki.openstreetmap.org/wiki/Tag:building=shrine) |
[Q34627](https://www.wikidata.org/entity/Q34627) | Synagogue | [building=synagogue](https://wiki.openstreetmap.org/wiki/Tag:building=synagogue) |
[Q44539](https://www.wikidata.org/entity/Q44539) | Temple | [building=temple](https://wiki.openstreetmap.org/wiki/Tag:building=temple) |
[Q11707](https://www.wikidata.org/entity/Q11707) | Restaurant | [amenity=restaurant](https://wiki.openstreetmap.org/wiki/Tag:amenity=restaurant) |
[Q11315](https://www.wikidata.org/entity/Q11315) | Shopping mall | [shop=mall](https://wiki.openstreetmap.org/wiki/Tag:shop=mall), [shop=shopping_centre](https://wiki.openstreetmap.org/wiki/Tag:shop=shopping_centre) |
[Q11303](https://www.wikidata.org/entity/Q11303) | Skyscraper | |
[Q17350442](https://www.wikidata.org/entity/Q17350442) | Venue | |
[Q41253](https://www.wikidata.org/entity/Q41253) | Movie Theater | [amenity=cinema](https://wiki.openstreetmap.org/wiki/Tag:amenity=cinema) |
[Q483110](https://www.wikidata.org/entity/Q483110) | Stadium | [leisure=stadium](https://wiki.openstreetmap.org/wiki/Tag:leisure=stadium), [building=stadium](https://wiki.openstreetmap.org/wiki/Tag:building=stadium) |
[Q24354](https://www.wikidata.org/entity/Q24354) | Theater (structure) | [amenity=theatre](https://wiki.openstreetmap.org/wiki/Tag:amenity=theatre) |
[Q121359](https://www.wikidata.org/entity/Q121359) | Infrastructure | |
[Q1248784](https://www.wikidata.org/entity/Q1248784) | Airport | |
[Q12323](https://www.wikidata.org/entity/Q12323) | Dam | [waterway=dam](https://wiki.openstreetmap.org/wiki/Tag:waterway=dam) |
[Q1353183](https://www.wikidata.org/entity/Q1353183) | Launch pad | |
[Q105190](https://www.wikidata.org/entity/Q105190) | Levee | [man_made=dyke](https://wiki.openstreetmap.org/wiki/Tag:man_made=dyke) |
[Q105731](https://www.wikidata.org/entity/Q105731) | Lock (water navigation) | [lock=yes](https://wiki.openstreetmap.org/wiki/Key:lock) |
[Q44782](https://www.wikidata.org/entity/Q44782) | Port | |
[Q159719](https://www.wikidata.org/entity/Q159719) | Power station | [power=plant](https://wiki.openstreetmap.org/wiki/Tag:power=plant) |
[Q174814](https://www.wikidata.org/entity/Q174814) | Electrical substation | |
[Q134447](https://www.wikidata.org/entity/Q134447) | Nuclear power plant | [plant:source=nuclear](https://wiki.openstreetmap.org/wiki/Tag:plant:source=nuclear) |
[Q786014](https://www.wikidata.org/entity/Q786014) | Rest area | [highway=rest_area](https://wiki.openstreetmap.org/wiki/Tag:highway=rest_area), [highway=services](https://wiki.openstreetmap.org/wiki/Tag:highway=services) |
[Q12280](https://www.wikidata.org/entity/Q12280) | Bridge | [bridge=* ](https://wiki.openstreetmap.org/wiki/Key:bridge), [man_made=bridge](https://wiki.openstreetmap.org/wiki/Tag:man_made=bridge) |
[Q728937](https://www.wikidata.org/entity/Q728937) | Railroad Line | [railway=rail](https://wiki.openstreetmap.org/wiki/Tag:railway=rail) |
[Q1311958](https://www.wikidata.org/entity/Q1311958) | Railway Tunnel | |
[Q34442](https://www.wikidata.org/entity/Q34442) | Road | [highway=* ](https://wiki.openstreetmap.org/wiki/Key:highway), [route=road](https://wiki.openstreetmap.org/wiki/Tag:route=road) |
[Q1788454](https://www.wikidata.org/entity/Q1788454) | Road junction | |
[Q44377](https://www.wikidata.org/entity/Q44377) | Tunnel | [tunnel=* ](https://wiki.openstreetmap.org/wiki/Key:tunnel) |
[Q5031071](https://www.wikidata.org/entity/Q5031071) | Canal tunnel | |
[Q719456](https://www.wikidata.org/entity/Q719456) | Station | [public_transport=station](https://wiki.openstreetmap.org/wiki/Tag:public_transport=station) |
[Q205495](https://www.wikidata.org/entity/Q205495) | Filling station | [amenity=fuel](https://wiki.openstreetmap.org/wiki/Tag:amenity=fuel) |
[Q928830](https://www.wikidata.org/entity/Q928830) | Metro station | [station=subway](https://wiki.openstreetmap.org/wiki/Tag:station=subway) |
[Q55488](https://www.wikidata.org/entity/Q55488) | Train station | [railway=station](https://wiki.openstreetmap.org/wiki/Tag:railway=station) |
[Q2175765](https://www.wikidata.org/entity/Q2175765) | Tram stop | [railway=tram_stop](https://wiki.openstreetmap.org/wiki/Tag:railway=tram_stop), [public_transport=stop_position](https://wiki.openstreetmap.org/wiki/Tag:public_transport=stop_position) |
[Q6852233](https://www.wikidata.org/entity/Q6852233) | Military building | |
[Q44494](https://www.wikidata.org/entity/Q44494) | Mill (grinding) | |
[Q185187](https://www.wikidata.org/entity/Q185187) | Watermill | [man_made=watermill](https://wiki.openstreetmap.org/wiki/Tag:man_made=watermill) |
[Q38720](https://www.wikidata.org/entity/Q38720) | Windmill | [man_made=windmill](https://wiki.openstreetmap.org/wiki/Tag:man_made=windmill) |
[Q4989906](https://www.wikidata.org/entity/Q4989906) | Monument | [historic=monument](https://wiki.openstreetmap.org/wiki/Tag:historic=monument) |
[Q5003624](https://www.wikidata.org/entity/Q5003624) | Memorial | [historic=memorial](https://wiki.openstreetmap.org/wiki/Tag:historic=memorial) |
[Q271669](https://www.wikidata.org/entity/Q271669) | Landform | |
[Q190429](https://www.wikidata.org/entity/Q190429) | Depression (geology) | |
[Q17018380](https://www.wikidata.org/entity/Q17018380) | Bight (geography) | |
[Q54050](https://www.wikidata.org/entity/Q54050) | Hill | |
[Q1210950](https://www.wikidata.org/entity/Q1210950) | Channel (geography) | |
[Q23442](https://www.wikidata.org/entity/Q23442) | Island | [place=island](https://wiki.openstreetmap.org/wiki/Tag:place=island) |
[Q42523](https://www.wikidata.org/entity/Q42523) | Atoll | |
[Q34763](https://www.wikidata.org/entity/Q34763) | Peninsula | |
[Q355304](https://www.wikidata.org/entity/Q355304) | Watercourse | |
[Q30198](https://www.wikidata.org/entity/Q30198) | Marsh | [wetland=marsh](https://wiki.openstreetmap.org/wiki/Tag:wetland=marsh) |
[Q75520](https://www.wikidata.org/entity/Q75520) | Plateau | |
[Q2042028](https://www.wikidata.org/entity/Q2042028) | Ravine | |
[Q631305](https://www.wikidata.org/entity/Q631305) | Rock formation | |
[Q12516](https://www.wikidata.org/entity/Q12516) | Pyramid | |
[Q1076486](https://www.wikidata.org/entity/Q1076486) | Sports venue | |
[Q682943](https://www.wikidata.org/entity/Q682943) | Cricket field | [sport=cricket](https://wiki.openstreetmap.org/wiki/Tag:sport=cricket) |
[Q1048525](https://www.wikidata.org/entity/Q1048525) | Golf course | [leisure=golf_course](https://wiki.openstreetmap.org/wiki/Tag:leisure=golf_course) |
[Q1777138](https://www.wikidata.org/entity/Q1777138) | Race track | [highway=raceway](https://wiki.openstreetmap.org/wiki/Tag:highway=raceway) |
[Q130003](https://www.wikidata.org/entity/Q130003) | Ski resort | |
[Q174782](https://www.wikidata.org/entity/Q174782) | Town square | [place=square](https://wiki.openstreetmap.org/wiki/Tag:place=square) |
[Q12518](https://www.wikidata.org/entity/Q12518) | Tower | [building=tower](https://wiki.openstreetmap.org/wiki/Tag:building=tower), [man_made=tower](https://wiki.openstreetmap.org/wiki/Tag:man_made=tower) |
[Q39715](https://www.wikidata.org/entity/Q39715) | Lighthouse | [man_made=lighthouse](https://wiki.openstreetmap.org/wiki/Tag:man_made=lighthouse) |
[Q274153](https://www.wikidata.org/entity/Q274153) | Water tower | [building=water_tower](https://wiki.openstreetmap.org/wiki/Tag:building=water_tower), [man_made=water_tower](https://wiki.openstreetmap.org/wiki/Tag:man_made=water_tower) |
[Q43501](https://www.wikidata.org/entity/Q43501) | Zoo | [tourism=zoo](https://wiki.openstreetmap.org/wiki/Tag:tourism=zoo) |
[Q39614](https://www.wikidata.org/entity/Q39614) | Cemetery | [amenity=grave_yard](https://wiki.openstreetmap.org/wiki/Tag:amenity=grave_yard), [landuse=cemetery](https://wiki.openstreetmap.org/wiki/Tag:landuse=cemetery) |
[Q152081](https://www.wikidata.org/entity/Q152081) | Concentration camp | |
[Q1107656](https://www.wikidata.org/entity/Q1107656) | Garden | [leisure=garden](https://wiki.openstreetmap.org/wiki/Tag:leisure=garden) |
[Q820477](https://www.wikidata.org/entity/Q820477) | Mine | |
[Q33837](https://www.wikidata.org/entity/Q33837) | Archipelago | [place=archipelago](https://wiki.openstreetmap.org/wiki/Tag:place=archipelago) |
[Q40080](https://www.wikidata.org/entity/Q40080) | Beach | [natural=beach](https://wiki.openstreetmap.org/wiki/Tag:natural=beach) |
[Q15324](https://www.wikidata.org/entity/Q15324) | Body of water | [natural=water](https://wiki.openstreetmap.org/wiki/Tag:natural=water) |
[Q23397](https://www.wikidata.org/entity/Q23397) | Lake | [water=lake](https://wiki.openstreetmap.org/wiki/Tag:water=lake) |
[Q9430](https://www.wikidata.org/entity/Q9430) | Ocean | |
[Q165](https://www.wikidata.org/entity/Q165) | Sea | |
[Q47521](https://www.wikidata.org/entity/Q47521) | Stream | |
[Q12284](https://www.wikidata.org/entity/Q12284) | Canal | [waterway=canal](https://wiki.openstreetmap.org/wiki/Tag:waterway=canal) |
[Q4022](https://www.wikidata.org/entity/Q4022) | River | [waterway=river](https://wiki.openstreetmap.org/wiki/Tag:waterway=river), [type=waterway](https://wiki.openstreetmap.org/wiki/Relation:waterway) |
[Q185113](https://www.wikidata.org/entity/Q185113) | Cape | [natural=cape](https://wiki.openstreetmap.org/wiki/Tag:natural=cape) |
[Q35509](https://www.wikidata.org/entity/Q35509) | Cave | [natural=cave_entrance](https://wiki.openstreetmap.org/wiki/Tag:natural=cave_entrance) |
[Q8514](https://www.wikidata.org/entity/Q8514) | Desert | |
[Q4421](https://www.wikidata.org/entity/Q4421) | Forest | [natural=wood](https://wiki.openstreetmap.org/wiki/Tag:natural=wood) |
[Q35666](https://www.wikidata.org/entity/Q35666) | Glacier | [natural=glacier](https://wiki.openstreetmap.org/wiki/Tag:natural=glacier) |
[Q177380](https://www.wikidata.org/entity/Q177380) | Hot spring | |
[Q8502](https://www.wikidata.org/entity/Q8502) | Mountain | [natural=peak](https://wiki.openstreetmap.org/wiki/Tag:natural=peak) |
[Q133056](https://www.wikidata.org/entity/Q133056) | Mountain pass | |
[Q46831](https://www.wikidata.org/entity/Q46831) | Mountain range | |
[Q39816](https://www.wikidata.org/entity/Q39816) | Valley | [natural=valley](https://wiki.openstreetmap.org/wiki/Tag:natural=valley) |
[Q8072](https://www.wikidata.org/entity/Q8072) | Volcano | [natural=volcano](https://wiki.openstreetmap.org/wiki/Tag:natural=volcano) |
[Q43229](https://www.wikidata.org/entity/Q43229) | Organization | |
[Q327333](https://www.wikidata.org/entity/Q327333) | Government agency | [office=government](https://wiki.openstreetmap.org/wiki/Tag:office=government)|
[Q22698](https://www.wikidata.org/entity/Q22698) | Park | [leisure=park](https://wiki.openstreetmap.org/wiki/Tag:leisure=park) |
[Q159313](https://www.wikidata.org/entity/Q159313) | Urban agglomeration | |
[Q177634](https://www.wikidata.org/entity/Q177634) | Community | |
[Q5107](https://www.wikidata.org/entity/Q5107) | Continent | [place=continent](https://wiki.openstreetmap.org/wiki/Tag:place=continent) |
[Q6256](https://www.wikidata.org/entity/Q6256) | Country | [place=country](https://wiki.openstreetmap.org/wiki/Tag:place=country) |
[Q75848](https://www.wikidata.org/entity/Q75848) | Gated community | |
[Q3153117](https://www.wikidata.org/entity/Q3153117) | Intercommunality | |
[Q82794](https://www.wikidata.org/entity/Q82794) | Region | |
[Q56061](https://www.wikidata.org/entity/Q56061) | Administrative division | [boundary=administrative](https://wiki.openstreetmap.org/wiki/Tag:boundary=administrative) |
[Q665487](https://www.wikidata.org/entity/Q665487) | Diocese | |
[Q4976993](https://www.wikidata.org/entity/Q4976993) | Parish | [boundary=civil_parish](https://wiki.openstreetmap.org/wiki/Tag:boundary=civil_parish) |
[Q194203](https://www.wikidata.org/entity/Q194203) | Arrondissements of France | |
[Q91028](https://www.wikidata.org/entity/Q91028) | Arrondissements of Belgium | |
[Q3623867](https://www.wikidata.org/entity/Q3623867) | Arrondissements of Benin | |
[Q2311958](https://www.wikidata.org/entity/Q2311958) | Canton (country subdivision) | [political_division=canton](https://wiki.openstreetmap.org/wiki/FR:Cantons_in_France) |
[Q643589](https://www.wikidata.org/entity/Q643589) | Department | |
[Q202216](https://www.wikidata.org/entity/Q202216) | Overseas department and region | |
[Q149621](https://www.wikidata.org/entity/Q149621) | District | [place=district](https://wiki.openstreetmap.org/wiki/Tag:place=district) |
[Q15243209](https://www.wikidata.org/wiki/Q15243209) | Historic district | |
[Q5144960](https://www.wikidata.org/entity/Q5144960) | Microregion | |
[Q15284](https://www.wikidata.org/entity/Q15284) | Municipality | |
[Q515716](https://www.wikidata.org/entity/Q515716) | Prefecture | |
[Q34876](https://www.wikidata.org/entity/Q34876) | Province | |
[Q3191695](https://www.wikidata.org/entity/Q3191695) | Regency (Indonesia) | |
[Q1970725](https://www.wikidata.org/entity/Q1970725) | Natural region | |
[Q486972](https://www.wikidata.org/entity/Q486972) | Human settlement | |
[Q515](https://www.wikidata.org/entity/Q515) | City | [place=city](https://wiki.openstreetmap.org/wiki/Tag:place=city) |
[Q5119](https://www.wikidata.org/entity/Q5119) | Capital city | [capital=yes](https://wiki.openstreetmap.org/wiki/Key:capital) |
[Q4286337](https://www.wikidata.org/entity/Q4286337) | City district | |
[Q1394476](https://www.wikidata.org/entity/Q1394476) | Civil township | |
[Q1115575](https://www.wikidata.org/entity/Q1115575) | Civil parish | [designation=civil_parish](https://wiki.openstreetmap.org/wiki/Tag:designation=civil_parish) |
[Q5153984](https://www.wikidata.org/entity/Q5153984) | Commune-level subdivisions | |
[Q123705](https://www.wikidata.org/entity/Q123705) | Neighbourhood | [place=neighbourhood](https://wiki.openstreetmap.org/wiki/Tag:place=neighbourhood) |
[Q1500350](https://www.wikidata.org/entity/Q1500350) | Townships of China | |
[Q17343829](https://www.wikidata.org/entity/Q17343829) | Unincorporated Community | |
[Q3957](https://www.wikidata.org/entity/Q3957) | Town | [place=town](https://wiki.openstreetmap.org/wiki/Tag:place=town) |
[Q532](https://www.wikidata.org/entity/Q532) | Village | [place=village](https://wiki.openstreetmap.org/wiki/Tag:place=village) |
[Q5084](https://www.wikidata.org/entity/Q5084) | Hamlet | [place=hamlet](https://wiki.openstreetmap.org/wiki/Tag:place=hamlet) |
[Q7275](https://www.wikidata.org/entity/Q7275) | State | |
[Q79007](https://www.wikidata.org/entity/Q79007) | Street | |
[Q473972](https://www.wikidata.org/entity/Q473972) | Protected area | [boundary=protected_area](https://wiki.openstreetmap.org/wiki/Tag:boundary=protected_area) |
[Q1377575](https://www.wikidata.org/entity/Q1377575) | Wildlife refuge | |
[Q1410668](https://www.wikidata.org/entity/Q1410668) | National Wildlife Refuge | [protection_title=National Wildlife Refuge](ownership=national), [ownership=national](https://wiki.openstreetmap.org/wiki/Tag:ownership=national)|
[Q9259](https://www.wikidata.org/entity/Q9259) | World Heritage Site | |
---
### Future Work
The Wikidata improvements to Nominatim can be further enhanced by:
- continuing to add new Wikidata links to OSM objects
- increasing the number of place types accounted for in the wikipedia_articles table
- working to use place types in the wikipedia_article matching process