メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.008091590176 34.8908939469449, 137.008138516831 34.8918091472472, 137.008415057088 34.8922451751836, 137.007292198258 34.8927109886302, 137.007015669296 34.8922712958869, 137.006266288538 34.8910595074842, 137.008430646043 34.8900269341097, 137.008858703614 34.890587112943, 137.008091590176 34.8908939469449)) ^^http://www.opengis.net/ont/geosparql#wktLiteral