メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.351564198421 43.0243248595153, 141.353088275934 43.0243929386255, 141.353084169253 43.0245565649724, 141.353047317914 43.0250797473741, 141.353059891409 43.0254342419124, 141.353075580617 43.025647185032, 141.353108455785 43.025897679163, 141.351048064124 43.0257734844897, 141.351102072945 43.0253173222173, 141.351128415374 43.0251345994161, 141.351161663681 43.0248464345221, 141.351194460629 43.0245957525958, 141.351227638334 43.0243122998082, 141.351564198421 43.0243248595153)) ^^http://www.opengis.net/ont/geosparql#wktLiteral