メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.371386881932 43.0759325074772, 141.371275006209 43.0763427243444, 141.371230520043 43.0765285447835, 141.371077662586 43.0771075180621, 141.370889376999 43.0770372906965, 141.370507795713 43.0769052351482, 141.369495523454 43.0765645164684, 141.369384260046 43.0765225884092, 141.369143693987 43.0764253708018, 141.36961401295 43.0759947744321, 141.369981491875 43.0757309105805, 141.370460550031 43.0753726068647, 141.370817767345 43.0754233149245, 141.370991061645 43.0754479251127, 141.371490614428 43.0755079514612, 141.371475968154 43.0755527094444, 141.371386881932 43.0759325074772)) ^^http://www.opengis.net/ont/geosparql#wktLiteral