メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.546112788526 43.2401581112519, 143.545993594679 43.2401622767538, 143.545863757335 43.2387078661829, 143.545854967693 43.2386064812904, 143.547374161822 43.2385250150435, 143.547377816319 43.2385658350783, 143.547476937886 43.2396729543579, 143.547479211756 43.2396983883338, 143.546681975295 43.2397272105294, 143.546672907426 43.2396851862854, 143.546671589592 43.2396231000743, 143.546141844921 43.2396414949231, 143.546059776356 43.2396408095806, 143.546112788526 43.2401581112519)) ^^http://www.opengis.net/ont/geosparql#wktLiteral