メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.399619835748 43.0648001246018, 141.399997550186 43.0651417797914, 141.399223873918 43.0656125165147, 141.398896557302 43.0657952627368, 141.39816116862 43.0654665564321, 141.39782691495 43.0653119455481, 141.397035788165 43.0649569357111, 141.39863950248 43.0639702599027, 141.3992216979 43.0644651391656, 141.399234214717 43.0644756414597, 141.399619835748 43.0648001246018)) ^^http://www.opengis.net/ont/geosparql#wktLiteral