メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.855610147624 38.0990937811977, 140.855470266736 38.0999007939391, 140.855440158612 38.0998785558407, 140.855396369014 38.0998592765865, 140.85531529384 38.0998439454031, 140.855265351431 38.0998310024026, 140.854749358997 38.0996556784496, 140.854133570445 38.0993709785276, 140.853182258263 38.0987777296583, 140.852967037679 38.0985285750072, 140.854128284827 38.0984413685725, 140.854233409204 38.0984413498824, 140.854468677848 38.0986192613864, 140.854964384437 38.0988525949228, 140.855610147624 38.0990937811977)) ^^http://www.opengis.net/ont/geosparql#wktLiteral