メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.370384326983 37.3673996650211, 140.369456149718 37.3676438082978, 140.3694359489 37.367581386899, 140.369372484972 37.367444538093, 140.369117744786 37.3667967598948, 140.370048796 37.366635394032, 140.370091275566 37.3667300996393, 140.370130396598 37.3668173557685, 140.370384326983 37.3673996650211)) ^^http://www.opengis.net/ont/geosparql#wktLiteral