メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.983944330712 43.5453816713539, 144.98323313297 43.5449100136529, 144.983134135611 43.5449825597896, 144.982520296536 43.5445344094091, 144.982657750685 43.5444315148187, 144.982964409814 43.544483210556, 144.98376792513 43.5437990485938, 144.984678763255 43.5444228391896, 144.984357119332 43.5446809444703, 144.984362307136 43.5446845123952, 144.984067138907 43.5449167033805, 144.984305576849 43.5450842957053, 144.983944330712 43.5453816713539)) ^^http://www.opengis.net/ont/geosparql#wktLiteral