メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.884982188708 43.8042483067462, 143.886490563905 43.8043518350912, 143.886450321427 43.8047409808069, 143.886419720817 43.8050353553, 143.887091852677 43.8050864427971, 143.886787967869 43.805243639946, 143.886442062922 43.8054195437958, 143.883956971529 43.80525549171, 143.884001972583 43.8048977632242, 143.884044643469 43.8045827360154, 143.884096343529 43.8042000897438, 143.884982188708 43.8042483067462)) ^^http://www.opengis.net/ont/geosparql#wktLiteral