メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.84802934708 37.4257104098447, 138.848658230329 37.4267711401677, 138.846838658315 37.4274633155848, 138.846625235901 37.4271166002668, 138.84620295384 37.4264017520724, 138.845953510807 37.4259899521262, 138.84547321399 37.4251707990517, 138.846088627548 37.425020874358, 138.845839956844 37.4245645787466, 138.846047082223 37.4245183530306, 138.846194771707 37.4245421350323, 138.847431180354 37.424741101914, 138.847760837443 37.4252717770977, 138.84802934708 37.4257104098447)) ^^http://www.opengis.net/ont/geosparql#wktLiteral