メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.738947192339 43.2045450843912, 141.738172381803 43.2054102479017, 141.738137779279 43.205392089507, 141.736826964013 43.2067666992864, 141.736054467722 43.2065826375995, 141.737529825719 43.205072054632, 141.738348931525 43.2042333959348, 141.738908090358 43.2045246556806, 141.738947192339 43.2045450843912)) ^^http://www.opengis.net/ont/geosparql#wktLiteral