メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((134.879543611288 35.3850680692528, 134.869757703719 35.3816569586043, 134.866478606295 35.3807368481057, 134.872961779531 35.3758043199227, 134.883472102968 35.3808086662581, 134.879543611288 35.3850680692528)) ^^http://www.opengis.net/ont/geosparql#wktLiteral