メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.887909192904 43.0150803538267, 142.887824455436 43.0150282883883, 142.887782546868 43.0150024997474, 142.886773295689 43.0143822457652, 142.887575541975 43.0136847626859, 142.88760137793 43.0136623242931, 142.887735589244 43.0135456049733, 142.888760020026 43.0141560606932, 142.88887624136 43.0142266574917, 142.888395070766 43.0146560952982, 142.887909192904 43.0150803538267)) ^^http://www.opengis.net/ont/geosparql#wktLiteral