メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.395205139593 43.0796397081135, 141.394815963092 43.0797941239753, 141.392784921282 43.0806367202885, 141.392368997915 43.0801095067576, 141.392356273273 43.0800932353191, 141.392029279392 43.0796768931564, 141.394120871201 43.0789348415999, 141.394147404613 43.0789241395051, 141.395650979136 43.0783169781094, 141.396072545775 43.0788466144376, 141.396278030496 43.0791165966854, 141.396331862502 43.0791779737141, 141.395778971326 43.0794045952143, 141.395212857157 43.0796366708712, 141.395205139593 43.0796397081135)) ^^http://www.opengis.net/ont/geosparql#wktLiteral