メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.901678367744 43.466264795068, 141.899780433442 43.4665894829216, 141.899541828673 43.4657698320417, 141.899241858324 43.464757339876, 141.901131196478 43.4644656162199, 141.901250670297 43.4648386610545, 141.901363531491 43.4652157300614, 141.901678367744 43.466264795068)) ^^http://www.opengis.net/ont/geosparql#wktLiteral