メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.427825030034 42.9992084328143, 144.426170109566 42.9996080732417, 144.425758256808 42.9987929324688, 144.427883842286 42.9981945304585, 144.428291860643 42.9990956754528, 144.427825030034 42.9992084328143)) ^^http://www.opengis.net/ont/geosparql#wktLiteral