メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.379465516422 34.9865724401264, 138.379443067547 34.9865703763235, 138.378931891898 34.9865416324584, 138.378686228355 34.9865325173462, 138.378444184911 34.9865203764148, 138.3784738271 34.9860119264476, 138.37852335501 34.9854871580444, 138.379003846206 34.9855024913378, 138.378990709444 34.9858429195621, 138.379496496368 34.9858522900955, 138.379465516422 34.9865724401264)) ^^http://www.opengis.net/ont/geosparql#wktLiteral