メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.600591596098 42.8854801015953, 141.600867609414 42.8858872679906, 141.601609771417 42.8869820259829, 141.60103821761 42.8871875994151, 141.599755366877 42.8876490042436, 141.598315864439 42.8881666819673, 141.597786533463 42.8883570762094, 141.597529157413 42.8879791984294, 141.596767126269 42.8868604597128, 141.596499191285 42.8864646551488, 141.595752804497 42.8853620314314, 141.596250039023 42.8851758213158, 141.597684101904 42.884638863695, 141.59897930321 42.8841538470368, 141.599539019729 42.8839442764393, 141.600591596098 42.8854801015953)) ^^http://www.opengis.net/ont/geosparql#wktLiteral