メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.433788082736 43.795598988603, 142.434275140082 43.7959079601604, 142.434725785276 43.7961938177933, 142.435165640569 43.7964728353324, 142.435638387791 43.7967727185938, 142.43429631418 43.7979133746005, 142.433812343027 43.7976028503745, 142.433372503437 43.7973206205044, 142.43291651698 43.7970280211772, 142.432451037085 43.7967293175697, 142.432011349886 43.7964471832436, 142.432752668239 43.7958291170344, 142.433356815362 43.7953253926, 142.433788082736 43.795598988603)) ^^http://www.opengis.net/ont/geosparql#wktLiteral