メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.320126404804 43.1074635856705, 141.320798688854 43.1081235136502, 141.320420793136 43.1083259421229, 141.320070062258 43.108515509431, 141.319703466136 43.1087131043524, 141.319309842648 43.1089203958722, 141.318659827992 43.1082672511562, 141.317920536158 43.1075903086, 141.318316782236 43.1073616637196, 141.318705987282 43.1071478008693, 141.319042985538 43.1069710664186, 141.319434457006 43.1067656581159, 141.320126404804 43.1074635856705)) ^^http://www.opengis.net/ont/geosparql#wktLiteral