メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.502113059352 43.7544186439003, 143.50156210511 43.7555365473681, 143.500075976774 43.7554778294371, 143.498592963431 43.7554940560759, 143.497424613495 43.7554610664736, 143.495078967247 43.7549605485797, 143.49437282628 43.7547607696725, 143.498653178807 43.7470247883693, 143.504971900532 43.7487454369561, 143.502151775827 43.7543401636863, 143.502113059352 43.7544186439003)) ^^http://www.opengis.net/ont/geosparql#wktLiteral