メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.508235876291 43.853494952233, 144.507123292571 43.8635604887058, 144.506798903569 43.8668556548928, 144.482607854961 43.8658172664109, 144.482872768602 43.8623976960752, 144.483695919212 43.8524552219641, 144.476748484982 43.8521655179548, 144.477168333296 43.8485773011113, 144.477505370115 43.8452815314039, 144.484169442888 43.8456591731216, 144.50878435381 43.8464984105219, 144.508235876291 43.853494952233)) ^^http://www.opengis.net/ont/geosparql#wktLiteral