メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.772834449067 43.2080283410835, 141.772759825998 43.2080857702417, 141.772381369762 43.2078857275169, 141.772618056564 43.2076288903821, 141.773357794755 43.206879315078, 141.773453859052 43.2069266941444, 141.773572336707 43.2073935334984, 141.773373755613 43.2075786555652, 141.773244028798 43.2076876175748, 141.77318601528 43.2077235247896, 141.772834449067 43.2080283410835)) ^^http://www.opengis.net/ont/geosparql#wktLiteral