メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.372107287961 43.0419878085786, 141.371935524743 43.0424679727914, 141.37188973557 43.0424648786231, 141.371563215806 43.0424402201866, 141.371433626345 43.0424302235712, 141.371272523262 43.0424178747604, 141.370252505028 43.0423370371666, 141.370261198693 43.0422777744985, 141.370263976348 43.0422588478607, 141.370274696161 43.0418505925188, 141.371147265547 43.0419227026581, 141.37108338932 43.041486937799, 141.372297201161 43.0414987106849, 141.372130336167 43.0419314401978, 141.372107287961 43.0419878085786)) ^^http://www.opengis.net/ont/geosparql#wktLiteral