メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.212993005421 36.6742219997248, 137.213090496288 36.6742277339777, 137.214200096231 36.6742117976001, 137.214221188611 36.6747776379342, 137.21423555013 36.6753859341304, 137.214258516339 36.6761979096838, 137.214258790927 36.6766409696501, 137.21304761544 36.6766706047857, 137.211579197186 36.6766937085207, 137.2108895536 36.6767157968255, 137.210790762373 36.6755870969949, 137.210782489453 36.6754966299119, 137.210680414946 36.6741623467134, 137.211380768582 36.674203760038, 137.212993005421 36.6742219997248)) ^^http://www.opengis.net/ont/geosparql#wktLiteral