メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.35345407343 43.0747729417924, 141.353450229409 43.0748391622145, 141.353372634493 43.0751009434836, 141.353280514284 43.0754117193635, 141.351618525324 43.0751801564179, 141.351690713055 43.0748986625085, 141.351760644921 43.0746259522153, 141.351824527547 43.0743662438643, 141.351902518205 43.0740491701564, 141.353592144895 43.0742780607241, 141.35345484905 43.0747591628524, 141.35345407343 43.0747729417924)) ^^http://www.opengis.net/ont/geosparql#wktLiteral