メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.784671738125 35.0668653026736, 136.78313725526 35.0667265760917, 136.7830730103 35.0665786923902, 136.782872565365 35.06618135575, 136.782217177287 35.0648452937263, 136.78193771292 35.0642750929605, 136.784876035193 35.0644434813887, 136.784841445904 35.0648326093163, 136.784782960613 35.065268071401, 136.784767835311 35.06542845118, 136.784727368201 35.0658568566825, 136.784668769786 35.0667185280943, 136.784671738125 35.0668653026736)) ^^http://www.opengis.net/ont/geosparql#wktLiteral