メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.350912284967 43.029842934184, 141.352244450152 43.0299396196765, 141.352161687359 43.0305996540348, 141.352071931983 43.0312854447299, 141.351160652162 43.0312175242093, 141.350346705806 43.0311609818059, 141.350410563654 43.0306547531363, 141.350429539448 43.030464728955, 141.350448523774 43.0303135272059, 141.350522986837 43.0298161031681, 141.350912284967 43.029842934184)) ^^http://www.opengis.net/ont/geosparql#wktLiteral