メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.602629955376 39.4688063513248, 140.601892069654 39.4689293857364, 140.601513671943 39.468994506709, 140.597729566037 39.4696458932365, 140.597720711802 39.4694701532951, 140.597717511116 39.4675958641324, 140.597528435686 39.4675954836819, 140.597377250166 39.4661353236908, 140.6012289658 39.4678847544032, 140.603312765151 39.4681780632155, 140.603520319769 39.4683102798201, 140.603557035692 39.4686544432376, 140.60289473644 39.4687922349429, 140.602629955376 39.4688063513248)) ^^http://www.opengis.net/ont/geosparql#wktLiteral