メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.32564918577 43.1107613786239, 141.326266193935 43.1114011388973, 141.325922725506 43.1115863450172, 141.32552848827 43.1117896354736, 141.325184876715 43.1119840508057, 141.324809659209 43.1121798277874, 141.324445358175 43.1117916971707, 141.324175905838 43.1115306412643, 141.323471428103 43.110817301799, 141.323818054565 43.1106201719479, 141.324198729346 43.1104311923515, 141.324579909922 43.1102148587699, 141.324947087158 43.1100294959407, 141.32564918577 43.1107613786239)) ^^http://www.opengis.net/ont/geosparql#wktLiteral