メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.304532090435 37.3801318459553, 140.304422975344 37.3802532244994, 140.304227764985 37.3805381318181, 140.303949789088 37.3809262883564, 140.303672006631 37.3813386616308, 140.303546298049 37.381537122796, 140.303388178458 37.3816950221468, 140.302575693455 37.3820368612499, 140.301781879847 37.3823393400809, 140.301508415004 37.3824485540832, 140.300914570655 37.3814826325408, 140.304501133188 37.3801047953549, 140.304532090435 37.3801318459553)) ^^http://www.opengis.net/ont/geosparql#wktLiteral