メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.037128985673 42.9150032087264, 143.037866868326 42.9150584881762, 143.037669019764 42.9164953246906, 143.036929558372 42.9164375936019, 143.036239668254 42.9163838076874, 143.036192399396 42.9163801228277, 143.036390741794 42.9149531313404, 143.036455474858 42.9149569781782, 143.036463136347 42.9149574883116, 143.036481333579 42.9149587697501, 143.037128985673 42.9150032087264)) ^^http://www.opengis.net/ont/geosparql#wktLiteral