メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.974111287881 43.5446694446009, 144.973705518216 43.544400553383, 144.973582263188 43.5444928321884, 144.973453446563 43.5444101865867, 144.973573469304 43.5443106007585, 144.972956118592 43.5438900469907, 144.973767312363 43.5432323186396, 144.974932266802 43.5439972360219, 144.974111287881 43.5446694446009)) ^^http://www.opengis.net/ont/geosparql#wktLiteral