メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.343912270916 43.088611867136, 141.344236142209 43.0886593500127, 141.344367825139 43.0886786559859, 141.344943294127 43.0887630221477, 141.344842078193 43.0891232712889, 141.344747849139 43.0894586435227, 141.344649766835 43.0899154249, 141.344541528223 43.0903840813627, 141.343816792923 43.0902765019241, 141.342987580197 43.0901609862174, 141.343232282988 43.0892501309869, 141.343338636607 43.0888648054781, 141.343428042266 43.088540872814, 141.343912270916 43.088611867136)) ^^http://www.opengis.net/ont/geosparql#wktLiteral