メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.989475904121 34.8884668716332, 136.989032259004 34.8884872078158, 136.988285588604 34.8885736508223, 136.987725238254 34.8886445198251, 136.98757756988 34.8886613446833, 136.987160086795 34.8875139970886, 136.987252472013 34.8874889907862, 136.987259453838 34.887486606789, 136.989448466805 34.8867413171895, 136.989458584734 34.8873774480188, 136.989475904121 34.8884668716332)) ^^http://www.opengis.net/ont/geosparql#wktLiteral