メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.625017786174 34.9353093455357, 136.624319397988 34.9352694764787, 136.623092906954 34.9351977991616, 136.623067118652 34.9346976769395, 136.623039980646 34.9342853861659, 136.622979746712 34.9335491527805, 136.624632464827 34.9334794033988, 136.624554631865 34.9336022782753, 136.624464206377 34.9337900833484, 136.624427852919 34.9338965463132, 136.624411372084 34.934029812138, 136.624412188737 34.9341379161023, 136.625083555009 34.9341398906121, 136.625017786174 34.9353093455357)) ^^http://www.opengis.net/ont/geosparql#wktLiteral