メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.359833370372 43.7423512442343, 142.36057486352 43.7425714583584, 142.359914891182 43.7437239086058, 142.359911967885 43.7437288692518, 142.359255393903 43.7448893833726, 142.358838696442 43.7447578581175, 142.358552007947 43.7446698971942, 142.358335890638 43.7446035274931, 142.358386651647 43.7442179942392, 142.358496802607 43.7438544164704, 142.358647771105 43.7434419945404, 142.358682960953 43.7433663125388, 142.358763426857 43.7431931744998, 142.359211907555 43.7424189123077, 142.35933066507 43.7422104175544, 142.359833370372 43.7423512442343)) ^^http://www.opengis.net/ont/geosparql#wktLiteral