user: Question: Which tournament had a QF in 2011?
Columns: ['Tournament', '2007', '2008', '2009', '2010', '2011', '2012', '2013']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Grand Slam tournaments', 'Grand Slam tournaments', 'Grand Slam tournaments', 'Grand Slam tournaments', 'Grand Slam tournaments', 'Grand Slam tournaments', 'Grand Slam tournaments', 'Grand Slam tournaments']
SQL:

assistant: SELECT "Tournament" FROM "Table" WHERE "2011" = 'QF';