メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.322083216397 37.4019993588045, 140.321730916777 37.4018504429178, 140.320045595713 37.401130320374, 140.319374023636 37.400835299627, 140.320427438557 37.4006910151603, 140.320676056104 37.4006569028328, 140.322075764248 37.4004521866103, 140.321852971611 37.4007938303236, 140.321583663575 37.4011812845245, 140.322371609856 37.401527488349, 140.322083216397 37.4019993588045)) ^^http://www.opengis.net/ont/geosparql#wktLiteral