メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.754572993659 43.1962531692129, 141.754647672482 43.1962901330377, 141.755273325071 43.196609594977, 141.754460116793 43.1974151357623, 141.753803170057 43.1970840004504, 141.753558965294 43.196964509277, 141.753533259813 43.1969515277033, 141.754339475476 43.1961378056368, 141.754572993659 43.1962531692129)) ^^http://www.opengis.net/ont/geosparql#wktLiteral