Comment 7 for bug 837054

http://geoname-lookup.ubuntu.com/?query=Sao%20Paulo returns:

[{"name" : "Sao Paulo", "admin1" : "São Paulo", "country" : "Brazil", "longitude" : "-46.636110", "latitude" : "-23.547500" }, {"name" : "Sao Paulo", "admin1" : "São Paulo", "country" : "Brazil", "longitude" : "-46.636110", "latitude" : "-23.547500" }, {"name" : "Sao Paulo", "admin1" : "São Paulo", "country" : "Brazil", "longitude" : "-46.636110", "latitude" : "-23.547500" }, {"name" : "Sao Paulo", "admin1" : "São Paulo", "country" : "Brazil", "longitude" : "-46.636110", "latitude" : "-23.547500" }, {"name" : "Sao Paulo", "admin1" : "Amazonas", "country" : "Brazil", "longitude" : "-62.900000", "latitude" : "-7.233330" }, {"name" : "Sao Vicente de Paulo", "admin1" : "Rio de Janeiro", "country" : "Brazil", "longitude" : "-42.259720", "latitude" : "-22.724440" }]

The correct could be:

[{"name" : "Sao Paulo", "admin1" : "São Paulo", "country" : "Brazil", "longitude" : "-46.636110", "latitude" : "-23.547500" } , {"name" : "Sao Vicente de Paulo", "admin1" : "Rio de Janeiro", "country" : "Brazil", "longitude" : "-42.259720", "latitude" : "-22.724440" }]

There isn't 4 Sao Paulo city, and neither Sao Paulo in Amazonas!!! take a look in municipalities' list of Brazil:

http://pt.wikipedia.org/wiki/Anexo:Lista_de_munic%C3%ADpios_do_Brasil#S