user: Question: What is the 2006 that has a 2R in 2004, and a 2R in 2005?
Columns: ['Tournament', '2004', '2005', '2006', '2007']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Grand Slam Tournaments', 'Grand Slam Tournaments', 'Grand Slam Tournaments', 'Grand Slam Tournaments', 'Grand Slam Tournaments']
SQL:

assistant: SELECT "2006" FROM "Table" WHERE "2004" = '2R' AND "2005" = '2R';