メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.324966739099 43.0745518490443, 141.324046164063 43.0749579304716, 141.323516263695 43.0743237681142, 141.324461489708 43.0739112091743, 141.324966739099 43.0745518490443)) ^^http://www.opengis.net/ont/geosparql#wktLiteral