メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.182087367054 34.230998281236, 135.181785065631 34.230856378281, 135.181749159963 34.2308423336702, 135.182718867897 34.2298465244871, 135.182957328022 34.2299781381315, 135.182087367054 34.230998281236)) ^^http://www.opengis.net/ont/geosparql#wktLiteral