メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.344016705837 43.0988727337217, 141.343902766903 43.0993426096844, 141.343801155167 43.099698791027, 141.343721406146 43.1000237797839, 141.343381180053 43.0999648183704, 141.343165130189 43.0999330040325, 141.342150962845 43.0997837323661, 141.342241351304 43.0994667061427, 141.342337481429 43.0991183586899, 141.342456515927 43.098668146712, 141.343295385639 43.0987807205014, 141.343583901348 43.0988183133716, 141.344016705837 43.0988727337217)) ^^http://www.opengis.net/ont/geosparql#wktLiteral