メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.372822359239 43.7520272802584, 142.370633068024 43.7526537020721, 142.370206471291 43.7527757603261, 142.369877957152 43.752869753729, 142.369742719509 43.7526085251972, 142.369665548595 43.7524594582115, 142.369146998692 43.7514540171129, 142.369751061983 43.7508679307401, 142.369963094338 43.7506622034983, 142.370628624059 43.7501895034765, 142.371555500645 43.7496570495816, 142.372306929577 43.7510685384747, 142.372335950602 43.7511225325579, 142.372822359239 43.7520272802584)) ^^http://www.opengis.net/ont/geosparql#wktLiteral