メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.370344198054 43.0926249576889, 141.370249600448 43.093018138882, 141.37015700108 43.0933990988699, 141.370058036301 43.0938356386332, 141.369762458646 43.0937959508841, 141.368524602477 43.093629659132, 141.368634533415 43.0931986200866, 141.368736663696 43.0928027555697, 141.368838502155 43.0924205330117, 141.368925836708 43.0920190684515, 141.370435169197 43.0922235908599, 141.370344198054 43.0926249576889)) ^^http://www.opengis.net/ont/geosparql#wktLiteral