Question: The Federal University of Rio de Janeiro, is a public university in the state of Rio de Janeiro, in which country, in 2015, "QS World University Rankings" ranked UFRJ as the best Brazilian federal university?
Sentence (from "Federal University of Rio de Janeiro"): The Federal University of Rio de Janeiro or University of Brazil (Portuguese: "Universidade Federal do Rio de Janeiro" , UFRJ or "Universidade do Brasil ") is a public university in the state of Rio de Janeiro, Brazil.
Relevant evidence: Yes