メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.970280117326 43.5373159740758, 144.969743318187 43.5369605653531, 144.969883675456 43.5368533278406, 144.969020892741 43.5363033695731, 144.970173100751 43.5353806811161, 144.970257233697 43.5353128938814, 144.971087394789 43.5358554274943, 144.970993788358 43.5359318077778, 144.971701130026 43.5363910830982, 144.971329851634 43.5366248079799, 144.970280117326 43.5373159740758)) ^^http://www.opengis.net/ont/geosparql#wktLiteral