メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.841961449958 34.8748917314301, 136.84115567272 34.8753525055931, 136.840785661791 34.8755661809489, 136.840407406213 34.8757897629247, 136.840022988274 34.8760152287945, 136.839007781588 34.874841781587, 136.839407085167 34.8746060047725, 136.839678336325 34.8744504537254, 136.840153799795 34.8741762140327, 136.840446849628 34.8740071959651, 136.840949729213 34.8737083756856, 136.841961449958 34.8748917314301)) ^^http://www.opengis.net/ont/geosparql#wktLiteral