メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.351124799911 44.487172248865, 142.349751413851 44.4868181681352, 142.348820752976 44.4866310668299, 142.349256359349 44.4857123018035, 142.349266499191 44.4856910583815, 142.349668953584 44.4857877743725, 142.351000530656 44.4854594041104, 142.351892401498 44.4856119988075, 142.351124799911 44.487172248865)) ^^http://www.opengis.net/ont/geosparql#wktLiteral