(Program
  (Hash
    (KeyValue
    { (Identifier)
    ->(Identifier) }
    { (Integer)
    ->(Integer) }))
  (Hash)
{+(Assignment
    (Identifier)
    (Hash
      (Context
        (Comment)
        (KeyValue
          (Identifier)
          (Identifier)))
      (KeyValue
        (Identifier)
        (Identifier))))+}
{-(Hash
    (KeyValue
      (Identifier)
      (Identifier))
    (KeyValue
      (Identifier)
      (Identifier)))-})