メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.311152415387 43.0619875407736, 141.311367597954 43.062286375635, 141.310797756291 43.0625943820962, 141.310589086283 43.0627044913382, 141.310259862458 43.062349159259, 141.310114626435 43.0621997826908, 141.310361004123 43.0620573513591, 141.310963176081 43.0617424386171, 141.311152415387 43.0619875407736)) ^^http://www.opengis.net/ont/geosparql#wktLiteral