メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.475319003076 35.6600190631853, 140.475783384542 35.6603269232507, 140.476084892382 35.6605759612898, 140.476217915171 35.6606736024379, 140.476208931616 35.6606886142191, 140.475646545714 35.6612096526232, 140.474761999584 35.6605226728763, 140.475319003076 35.6600190631853)) ^^http://www.opengis.net/ont/geosparql#wktLiteral