メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((131.465590840482 31.9010863922709, 131.464029511507 31.901307273259, 131.462162272302 31.901634850758, 131.461874495157 31.900398808903, 131.461499327967 31.8986465302263, 131.46121700591 31.8973330528857, 131.461063167996 31.8966426860155, 131.461369122923 31.8965909785365, 131.461757798963 31.896532766414, 131.464556233573 31.8961138914421, 131.464894234217 31.8977413478812, 131.465504177355 31.9006718692123, 131.465590840482 31.9010863922709)) ^^http://www.opengis.net/ont/geosparql#wktLiteral