メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.647575155238 42.6566964899436, 141.649314833059 42.6572877265599, 141.651747566956 42.658105943662, 141.654070444171 42.6588892135471, 141.653161841743 42.6604321246812, 141.652530913837 42.661407330195, 141.650186331672 42.6606137895677, 141.647734340647 42.6597836223934, 141.64603381383 42.6592079030772, 141.644278611216 42.6586137216091, 141.644886057987 42.6576333712144, 141.645820524088 42.6561078207279, 141.647575155238 42.6566964899436)) ^^http://www.opengis.net/ont/geosparql#wktLiteral