メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.332489237466 43.1176158921721, 141.332823778723 43.117951713537, 141.333161948874 43.1183019090574, 141.332441606664 43.1186886916556, 141.3317172577 43.1190795164742, 141.331376313828 43.118728942357, 141.331021682297 43.1183885947132, 141.330691308388 43.118050621173, 141.330353846663 43.117705415995, 141.33106866946 43.1173283780109, 141.331797275078 43.116921346305, 141.332143444011 43.11726879732, 141.332489237466 43.1176158921721)) ^^http://www.opengis.net/ont/geosparql#wktLiteral