user: ### NOW ANSWER:
Question: What was 2002, when 2011 was, "ATP Masters Series"?
Columns: ['Tournament', '1998', '1999', '2000', '2001', '2002', '2003', '2004', '2005', '2006', '2007', '2008', '2009', '2010', '2011', '2012']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', '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', '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 "2002" FROM "Table" WHERE "2011" = 'ATP Masters Series';