メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.440759044803 42.8763171662858, 142.441441795123 42.8766899030812, 142.440643731475 42.8773220621073, 142.439987098138 42.8769854978852, 142.439126124788 42.876510575142, 142.439092012518 42.8764917122212, 142.436653569849 42.8751464897267, 142.436657962877 42.8751282666214, 142.436667512722 42.8750885827161, 142.43678694291 42.8748097274579, 142.438339473409 42.8749887585443, 142.439645791909 42.8757213463415, 142.439926058416 42.8758463506825, 142.440124272497 42.8759264087995, 142.440349999989 42.8760716188823, 142.440759044803 42.8763171662858)) ^^http://www.opengis.net/ont/geosparql#wktLiteral