メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.412271759495 40.7327377560495, 141.410950432949 40.7356813247614, 141.409706350804 40.7355824500818, 141.409938705908 40.7327093718124, 141.410161314647 40.7290683721978, 141.410400199927 40.7279369963486, 141.413313354977 40.7286082047778, 141.413177515197 40.7288716112358, 141.413103637319 40.7291136655479, 141.413067165133 40.7293820674082, 141.412999187211 40.7298675799706, 141.412722740392 40.7317766324484, 141.412271759495 40.7327377560495)) ^^http://www.opengis.net/ont/geosparql#wktLiteral