メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.342151605801 43.0407295891891, 141.342041575017 43.0416826729102, 141.341939141465 43.0423674364246, 141.339998959022 43.042241180462, 141.339999937075 43.0422333824023, 141.340056189223 43.041735963808, 141.340115891261 43.0413359092657, 141.340117381328 43.0413259340329, 141.340215540641 43.0405942978784, 141.340216613317 43.0405865707837, 141.340288407313 43.0398935469524, 141.341499948549 43.0399916483696, 141.342256343281 43.0400443510696, 141.342177282094 43.0405619154801, 141.342151605801 43.0407295891891)) ^^http://www.opengis.net/ont/geosparql#wktLiteral