メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.051986220164 37.9261023089526, 139.051768903682 37.9261017831634, 139.051765072171 37.926058579944, 139.051694818144 37.9260575029211, 139.051695190137 37.926101706308, 139.050969748828 37.926100188329, 139.050964792002 37.9259412687851, 139.050961978684 37.925849491132, 139.051980747609 37.9258447029757, 139.051986220164 37.9261023089526)) ^^http://www.opengis.net/ont/geosparql#wktLiteral