メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.983806299557 34.8714683566203, 136.983396485534 34.871590846684, 136.982911897888 34.8717609018989, 136.982563432852 34.8719241906393, 136.982496182565 34.8718266837173, 136.982050079413 34.8720206695158, 136.981629808952 34.8714382774604, 136.982303797168 34.8711384329994, 136.983478636726 34.8707479283374, 136.983806299557 34.8714683566203)) ^^http://www.opengis.net/ont/geosparql#wktLiteral