メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.345811366457 43.0295461751724, 141.346533952886 43.0295945733287, 141.346485012686 43.0299900766832, 141.346458673185 43.0301911543244, 141.346443646732 43.0303855686746, 141.346369414078 43.0309106319532, 141.34486307434 43.0307924573032, 141.3449286882 43.0303264042503, 141.344933933522 43.0302891006721, 141.344970664378 43.0298900553511, 141.345028425366 43.0295276778727, 141.345028157863 43.0294871654831, 141.345811366457 43.0295461751724)) ^^http://www.opengis.net/ont/geosparql#wktLiteral