メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.525262334171 44.0601223181919, 143.523851608882 44.0605499524143, 143.523027275766 44.0607981494382, 143.522145874783 44.0594837235549, 143.523006744524 44.0592120998691, 143.525007659623 44.0585699597269, 143.52546090209 44.0592380315868, 143.525931069921 44.0599083032403, 143.525262334171 44.0601223181919)) ^^http://www.opengis.net/ont/geosparql#wktLiteral