メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.988803330217 43.5579283030652, 144.987940586523 43.5577396121846, 144.987697657756 43.5572013104711, 144.988479211276 43.5564910292859, 144.988506908654 43.5565048150999, 144.988666334296 43.5565875550779, 144.989074796894 43.5567973313926, 144.989148422451 43.5568388109926, 144.988780274756 43.5572322809709, 144.989265526557 43.5575062793708, 144.988975907559 43.5577636634388, 144.988803330217 43.5579283030652)) ^^http://www.opengis.net/ont/geosparql#wktLiteral