context: Though it is the most played local derby in the history of La Liga, it is also the most unbalanced, with Barcelona overwhelmingly dominant. In the primera división league table, Espanyol has only managed to end above Barça on three occasions from 80 seasons (1928–2015) and the only all-Catalan Copa del Rey final was won by Barça in 1957. Espanyol has the consolation of achieving the largest margin win with a 6–0 in 1951, while Barcelona's biggest win was 5–0 on five occasions (in 1933, 1947, 1964, 1975 and 1992). Espanyol achieved a 2–1 win against Barça during the 2008–09 season, becoming the first team to defeat Barcelona at Camp Nou in their treble-winning season.
question: কখন এস্পানিওলের জয় ৬-০ ব্যবধানে?
answers: 1951