メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.353280514284 43.0754117193635, 141.353271888306 43.0754440027917, 141.353123852342 43.0759704530894, 141.353109402163 43.0760205547027, 141.352953571671 43.07656164224, 141.35132620981 43.0763415996993, 141.351471972247 43.0757552131974, 141.351618525324 43.0751801564179, 141.353280514284 43.0754117193635)) ^^http://www.opengis.net/ont/geosparql#wktLiteral