メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.370900557564 43.0849139294885, 141.370798535308 43.0853578354887, 141.370634833981 43.0860480489542, 141.370028676532 43.0859624422371, 141.369521620309 43.085891730616, 141.369474760883 43.085887361532, 141.368873403546 43.0858018559027, 141.368875998027 43.0857815511061, 141.369024883927 43.0852356101195, 141.369166658778 43.0846701326774, 141.369740708665 43.0847523321741, 141.370900557564 43.0849139294885)) ^^http://www.opengis.net/ont/geosparql#wktLiteral