メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.924448042273 35.0987626655389, 136.924445217554 35.0987616736704, 136.924413459763 35.0987576660521, 136.9238608102 35.0985583042371, 136.923123436173 35.098301662726, 136.923112015219 35.0982881177377, 136.92364078331 35.0972610921378, 136.925124594481 35.0974898563625, 136.925186600557 35.09748596612, 136.924965591384 35.0978463921081, 136.924813049778 35.0981025110405, 136.92476934869 35.09817587845, 136.924448042273 35.0987626655389)) ^^http://www.opengis.net/ont/geosparql#wktLiteral