メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.860307666947 43.7942262580761, 143.860190155269 43.7950698565042, 143.860124253988 43.7957060176052, 143.860088272525 43.7959132478481, 143.859897236562 43.7973949980017, 143.859074999323 43.7980841713285, 143.858447427017 43.7980437889062, 143.85703677881 43.7979529996523, 143.857257514818 43.7961245482922, 143.857469793964 43.7944734383074, 143.857715507249 43.7944591664603, 143.857929989116 43.7944279665086, 143.858205566978 43.7943545401103, 143.858586387339 43.7942345358871, 143.858929682179 43.794119772019, 143.858957021599 43.7941218854926, 143.860307666947 43.7942262580761)) ^^http://www.opengis.net/ont/geosparql#wktLiteral