メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.356324033999 43.1104885062029, 141.356317157291 43.1105322661697, 141.356233245359 43.1108890801095, 141.356219964295 43.1109374302219, 141.356096377974 43.111420793116, 141.354488066188 43.1111868428585, 141.354618439344 43.110666681344, 141.354718870889 43.1102568952969, 141.354807613985 43.1099244484583, 141.356401368898 43.1101547057752, 141.356324033999 43.1104885062029)) ^^http://www.opengis.net/ont/geosparql#wktLiteral