メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.328036029942 43.0600095106227, 141.327884672674 43.0605982832075, 141.327734586678 43.0611980344695, 141.327355310308 43.0611485074585, 141.327108308971 43.0611162525459, 141.326165142647 43.0609930848211, 141.326316582433 43.0603743567285, 141.326455547745 43.0598006091224, 141.328036029942 43.0600095106227)) ^^http://www.opengis.net/ont/geosparql#wktLiteral