メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.383214681077 43.1483425430227, 141.382742633131 43.1483872690635, 141.382275586206 43.1484179658411, 141.38208099836 43.1473299380601, 141.382047054811 43.1470676254234, 141.383479422854 43.1469453147233, 141.384546263965 43.1468478565152, 141.384667460086 43.1476193293282, 141.384714052002 43.147905088233, 141.384756569624 43.1482141666909, 141.384261945281 43.1482591455008, 141.383668705609 43.1483021080799, 141.383214681077 43.1483425430227)) ^^http://www.opengis.net/ont/geosparql#wktLiteral