メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.380201004039 43.0919695749676, 141.380321138458 43.0925388053778, 141.380435577018 43.0930428685538, 141.379746256825 43.0931110586171, 141.378828580189 43.0931763125339, 141.378794949343 43.0926523955083, 141.378301961202 43.0926606730759, 141.37831457819 43.0920835880255, 141.37874059094 43.092081272021, 141.378721146582 43.0916666817421, 141.379407566763 43.0916192242986, 141.380118287019 43.091549933894, 141.380201004039 43.0919695749676)) ^^http://www.opengis.net/ont/geosparql#wktLiteral