メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((134.551997522722 34.0705792150589, 134.550589250083 34.0710189441693, 134.550539301883 34.0710180337326, 134.550196563103 34.0705424429036, 134.551106194349 34.0702365857852, 134.551682890425 34.0700295043868, 134.551997522722 34.0705792150589)) ^^http://www.opengis.net/ont/geosparql#wktLiteral