Question: Félix Loustau (] ) (25 December 1922 – 5 January 2003) is a former Argentine footballer who was a key player on which  Argentine sports club based in the Belgrano neighborhood of Buenos Aires, and named after the city's estuary, Río de la Plata?
Sentence (from "Club Atlético River Plate"): Club Atlético River Plate is an Argentine sports club based in the Belgrano neighborhood of Buenos Aires, and named after the city's estuary, Río de la Plata.
Relevant evidence: Yes