Question: In what city did the Salvadorian model born on August 4, 1994 win the Miss Universe pageant?
Sentence (from "Idubina Rivas"): Fátima Idubina Rivas Opico (born in August 4, 1994) is a Salvadorian model and beauty pageant titleholder who was appointed Miss Universe El Salvador 2015 and the winner of Reinado de El Salvador in 2013.
Relevant evidence: Yes