メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.356823113911 43.1416505710135, 141.357373127115 43.1415650463468, 141.3579466683 43.1414597284594, 141.358218828092 43.1426596029739, 141.358320163836 43.1431091551197, 141.358526901638 43.1439865589899, 141.357387135974 43.1441990139858, 141.357108356847 43.1442426980799, 141.356389843309 43.144368614285, 141.356185893576 43.1434869346128, 141.356114700548 43.1431187048452, 141.356023856595 43.1427480001682, 141.355932544183 43.1424161830655, 141.355804820515 43.1418210562269, 141.356823113911 43.1416505710135)) ^^http://www.opengis.net/ont/geosparql#wktLiteral