メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.339345402669 43.039823451838, 141.340288407313 43.0398935469524, 141.340216613317 43.0405865707837, 141.340215540641 43.0405942978784, 141.340117381328 43.0413259340329, 141.340115891261 43.0413359092657, 141.340056189223 43.041735963808, 141.338055846148 43.041588237757, 141.338068112137 43.0414528105087, 141.33809621479 43.0412255867747, 141.338131745584 43.040891732247, 141.338194234123 43.0404467609838, 141.338282884423 43.0397436051277, 141.33928292015 43.0398147957842, 141.339345402669 43.039823451838)) ^^http://www.opengis.net/ont/geosparql#wktLiteral