メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.967530156781 43.5391265527768, 144.967290818039 43.5389588751069, 144.968103230509 43.5382939181181, 144.968331594118 43.5384410760197, 144.968261591578 43.5385008246125, 144.968051902465 43.5386442007155, 144.967903942673 43.5387502109664, 144.967797733612 43.5388431316634, 144.967704748559 43.5389292337172, 144.967530156781 43.5391265527768)) ^^http://www.opengis.net/ont/geosparql#wktLiteral