メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.763171178528 43.2000037302087, 141.76278643541 43.2004181539898, 141.76244356288 43.200770867026, 141.762121966017 43.2006326069263, 141.762136407675 43.2006138281868, 141.761553727622 43.2003159172879, 141.761901243274 43.1999840446804, 141.762304231815 43.1995544404333, 141.763171178528 43.2000037302087)) ^^http://www.opengis.net/ont/geosparql#wktLiteral