メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.266763249351 37.8689935142282, 139.266590326499 37.8700686764637, 139.266117537418 37.8730047007391, 139.265724490955 37.8753096266247, 139.264192253181 37.8751455678288, 139.263947959231 37.8751292724407, 139.263068141558 37.8750398036308, 139.262338907428 37.8749820175434, 139.262940789033 37.8741617207015, 139.260443429761 37.8729838771267, 139.261303874106 37.8718154463028, 139.263575774342 37.8687589758508, 139.264221000218 37.8688391201112, 139.265493251462 37.8689394060746, 139.266763249351 37.8689935142282)) ^^http://www.opengis.net/ont/geosparql#wktLiteral