Premise: Giancarlo Danova (18 November 1938 – 15 June 2014) was an Italian football forward who played for A.C. Milan, Torino F.C., Catania Calcio, Atalanta B.C., Fiorentina F.C. and Mantova Calcio. During his career he played on three Italian Championship sides.
Hypothesis: Giancarlo Danova won championships with 3 different clubs