メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.845953510807 37.4259899521262, 138.84620295384 37.4264017520724, 138.844489412844 37.4270600781402, 138.844035167561 37.4270863282391, 138.843597181398 37.4265275185604, 138.843005555809 37.4258244143136, 138.842777029594 37.425567421002, 138.842615291855 37.4254054124889, 138.844310876249 37.4249458331407, 138.845740758926 37.424586552287, 138.845839956844 37.4245645787466, 138.846088627548 37.425020874358, 138.84547321399 37.4251707990517, 138.845953510807 37.4259899521262)) ^^http://www.opengis.net/ont/geosparql#wktLiteral