メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.119097210953 43.8264378827212, 144.119773256763 43.8262395319945, 144.12101366723 43.8283173948184, 144.121194809432 43.8286681691138, 144.120621011496 43.8286329899569, 144.119190567573 43.8290729217045, 144.117601354513 43.829561615185, 144.116979450246 43.8287691951418, 144.116895280871 43.8286616642054, 144.116425469477 43.8283105049972, 144.115564611641 43.8278783449414, 144.115873632257 43.8273656048242, 144.117188012734 43.826998071973, 144.119097210953 43.8264378827212)) ^^http://www.opengis.net/ont/geosparql#wktLiteral