メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.362824452404 43.1008421974155, 141.362921446049 43.1008513877076, 141.363491049077 43.1009252088888, 141.363246494795 43.101941785907, 141.363131098049 43.1019306946568, 141.362524614508 43.1018447719529, 141.362371230136 43.1018257908448, 141.361704698519 43.1017376403494, 141.361621689984 43.1017302454091, 141.361861564856 43.1007204557485, 141.362824452404 43.1008421974155)) ^^http://www.opengis.net/ont/geosparql#wktLiteral