メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.110136076845 39.4517027098549, 141.097710807099 39.4518408950976, 141.097640496183 39.4473272586981, 141.097674805155 39.4468114865697, 141.097722343859 39.4465900900403, 141.097880568346 39.4462184401308, 141.101654414888 39.4457765827813, 141.101862307752 39.4457460865164, 141.104312308902 39.4457234943807, 141.104322364749 39.4476944109375, 141.106891161866 39.4483390818708, 141.110065599984 39.4482420331548, 141.110114098155 39.4487580343305, 141.110158022956 39.4494260874891, 141.110171957651 39.4509884431557, 141.110136076845 39.4517027098549)) ^^http://www.opengis.net/ont/geosparql#wktLiteral