メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.350163925652 43.0825858252781, 141.350111621216 43.0826849992899, 141.349981049758 43.0829329352717, 141.349974732605 43.08294498256, 141.349756405338 43.0833802875585, 141.349721237031 43.0834885282013, 141.347968745714 43.0832582455706, 141.348153331045 43.0825404472441, 141.348235800439 43.0822165998589, 141.348326324153 43.0818341618513, 141.349902340353 43.0820573545915, 141.349965150841 43.0820662884925, 141.350415448044 43.0821241264925, 141.350178629314 43.0825579498859, 141.350163925652 43.0825858252781)) ^^http://www.opengis.net/ont/geosparql#wktLiteral