メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.324110805535 43.2285307118709, 144.321952957386 43.229072281321, 144.320995888345 43.2268990007379, 144.320876493615 43.2266278800248, 144.319870333853 43.2243428836587, 144.321910674844 43.2238513698968, 144.322091233317 43.2241623104503, 144.322811001108 43.2256620279078, 144.323007054017 43.2261460374119, 144.323134057329 43.2264597747522, 144.324110805535 43.2285307118709)) ^^http://www.opengis.net/ont/geosparql#wktLiteral