user: Question: Which 2006 tournament had a 4R performance in 2001?
Columns: ['Tournament', '1998', '1999', '2000', '2001', '2002', '2003', '2004', '2005', '2006', '2007', 'Career SR']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Australian Open', 'A', '1R', '1R', '3R', '1R', '2R', '2R', '1R', '1R', '3R', '0 / 9']
SQL:

assistant: SELECT "2006" FROM "Table" WHERE "2001" = '4R';