メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.692709978177 43.0102636518125, 141.691362554196 43.0107549501669, 141.690976655357 43.010221920169, 141.690811099116 43.0099362680554, 141.690916933841 43.0096042586486, 141.691421069961 43.0097259356826, 141.692756623797 43.0100806664443, 141.693029404364 43.0101512022457, 141.692709978177 43.0102636518125)) ^^http://www.opengis.net/ont/geosparql#wktLiteral