メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.338194234123 43.0404467609838, 141.338131745584 43.040891732247, 141.33809621479 43.0412255867747, 141.338068112137 43.0414528105087, 141.337428221653 43.0414052285962, 141.336345072427 43.0413247767576, 141.336377004347 43.0411371813271, 141.336402836029 43.0409664856661, 141.336420005325 43.0407915716955, 141.336481913146 43.0403478617286, 141.336483338649 43.0403228361047, 141.33649408685 43.0401411893733, 141.336556482669 43.0396321467917, 141.336713036613 43.0396333965293, 141.337108585472 43.0396628567865, 141.337690804034 43.0396995008742, 141.338282884423 43.0397436051277, 141.338194234123 43.0404467609838)) ^^http://www.opengis.net/ont/geosparql#wktLiteral