メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((145.132235849914 43.6572274457345, 145.133220555354 43.6572893179347, 145.133140621496 43.6583912626778, 145.133125743059 43.6584729615213, 145.133123457587 43.6584859227813, 145.133120395546 43.6585392677153, 145.132781253418 43.6585364402067, 145.132594762488 43.6585255393956, 145.132144309155 43.6584838568881, 145.131229783824 43.6583991434767, 145.131234933511 43.6583367459748, 145.131335492694 43.6571631903753, 145.132235849914 43.6572274457345)) ^^http://www.opengis.net/ont/geosparql#wktLiteral