メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.316338832777 42.285424939932, 143.316892764741 42.2856641477272, 143.316434052105 42.2862629046162, 143.316367481908 42.2863486316355, 143.315793348316 42.286108202843, 143.31512018801 42.2858260642514, 143.31518367454 42.2857485255124, 143.315641297954 42.2851239002191, 143.316338832777 42.285424939932)) ^^http://www.opengis.net/ont/geosparql#wktLiteral