メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.770013770326 43.1946940980018, 141.770303664126 43.194843143509, 141.770649446457 43.1950245622019, 141.770005116756 43.1957332992193, 141.769342179011 43.1953975841009, 141.769321593264 43.195387229054, 141.769073894151 43.195262833046, 141.769743947168 43.1945657424368, 141.770013770326 43.1946940980018)) ^^http://www.opengis.net/ont/geosparql#wktLiteral