メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.418817556537 43.7349800228689, 142.418866209581 43.73547383095, 142.416459231361 43.7356342112162, 142.416408967521 43.7350723869635, 142.416366506282 43.7345977832501, 142.418764361596 43.7344400549891, 142.418817556537 43.7349800228689)) ^^http://www.opengis.net/ont/geosparql#wktLiteral