メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.991602405393 34.9979118192733, 136.991582247583 34.9977452320281, 136.991557112561 34.9975027892815, 136.991416979831 34.9964530257386, 136.991157848989 34.9947927775176, 136.991138011908 34.9946521792452, 136.991212106732 34.9946523589868, 136.99183205759 34.9946584061943, 136.991840026436 34.9947812394368, 136.992066504942 34.9963828443001, 136.99353498189 34.9962412366944, 136.99358168342 34.9966928754234, 136.993631979227 34.9971184619031, 136.992358597042 34.9976262884123, 136.991602405393 34.9979118192733)) ^^http://www.opengis.net/ont/geosparql#wktLiteral