user: Question: What 1997 has Grand Slams for the 1999?
Columns: ['Tournament', '1990', '1991', '1992', '1993', '1994', '1995', '1996', '1997', '1998', '1999', '2000']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Grand Slams', 'Grand Slams', 'Grand Slams', 'Grand Slams', 'Grand Slams', 'Grand Slams', 'Grand Slams', 'Grand Slams', 'Grand Slams', 'Grand Slams', 'Grand Slams', 'Grand Slams']
SQL:

assistant: SELECT "1997" FROM "Table" WHERE "1999" = 'Grand Slams';