メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.32082689938 43.2320519939326, 144.320754975455 43.2320695411299, 144.319942796348 43.2322726413372, 144.317841839416 43.2326415197811, 144.316388504714 43.2329754549581, 144.316354981173 43.2328998985662, 144.315347908026 43.2306259993627, 144.315483419822 43.2305946493741, 144.319765463561 43.2296029576089, 144.320798732713 43.2319871023689, 144.32082689938 43.2320519939326)) ^^http://www.opengis.net/ont/geosparql#wktLiteral