user: Question: How many sets were in the 2011 Australian Open Tournament?
Columns: ['Tournament', '2007', '2008', '2009', '2011', '2012', '2013']
Types: ['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']
SQL:

assistant: SELECT COUNT("2011") FROM "Table" WHERE "Tournament" = 'Australian Open';