]> http://www.getty.edu/research/conducting_research/vocabularies/tgn/tgn_xml_dd04.pdf This ontology contains the TGN-specific classes and properties of the Getty thesaurus TGN. The schema is derived from the XML Schema file at the Getty website (see the seeAlso link), Revision and source information is notincluded. Types of places as defined in tgn_ptypes.xml are created as instances of this class. The placetype is associated using the properties tgn:placeTypePreferred and tgn:placetypeNonPreferred. Supertype for placeTypePreferred and placetypeNonPreferred Preferred catgorisation of the place Non-Preferred catgorisation of the place Supertype for the six latinus/longitude proerties. The decimal value should be between -90 and +90 (for latitude) or -180 and +180 (longitude). Elevation in meters.