メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.342456515927 43.098668146712, 141.342337481429 43.0991183586899, 141.342241351304 43.0994667061427, 141.342150962845 43.0997837323661, 141.34058561467 43.0995633952197, 141.340686662832 43.0992464551852, 141.340704700423 43.0991171241608, 141.340772208753 43.0988940172737, 141.340795465826 43.0987686661395, 141.340869738175 43.0984515137381, 141.341299393292 43.0985054043073, 141.341573952499 43.0985398404377, 141.341671350191 43.0985520561766, 141.342456515927 43.098668146712)) ^^http://www.opengis.net/ont/geosparql#wktLiteral