メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.859947407869 43.328288792087, 141.860062285456 43.3286714863237, 141.859399884849 43.3287740919565, 141.859295216003 43.3283999422464, 141.859123039431 43.3277645036942, 141.859005537163 43.327364218516, 141.859667915131 43.3272551447277, 141.859947407869 43.328288792087)) ^^http://www.opengis.net/ont/geosparql#wktLiteral