メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.34642736751 44.4805084294938, 142.346356639993 44.4804917889958, 142.344293712178 44.4800059189475, 142.34451139997 44.4795290915448, 142.345456919708 44.47975306404, 142.345485681337 44.479703399613, 142.345712738929 44.4793112524871, 142.345812990122 44.4793350748109, 142.346798484292 44.4795693342506, 142.346866743767 44.4795855877488, 142.346828585346 44.4796657060884, 142.34642736751 44.4805084294938)) ^^http://www.opengis.net/ont/geosparql#wktLiteral