メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.384006894572 43.0389925433691, 141.384222792603 43.0391988366973, 141.384233700665 43.0392686167515, 141.384688781168 43.0396621798042, 141.384419010017 43.039830199893, 141.384178985454 43.0399896534873, 141.383999290627 43.0400930166746, 141.383704455832 43.0397179646013, 141.383631350497 43.0396324522975, 141.383424267128 43.0393584253058, 141.383255263847 43.0391174599679, 141.383794348099 43.0388206655468, 141.384006894572 43.0389925433691)) ^^http://www.opengis.net/ont/geosparql#wktLiteral