user: Question: How many assists did the player who had 121 rebounds have? 
Columns: ['Player', 'Minutes', 'Field Goals', 'Rebounds', 'Assists', 'Steals', 'Blocks', 'Points']
Types: ['text', 'real', 'real', 'real', 'real', 'real', 'real', 'real']
Sample row: ['Sophia Witherspoon', 1061.0, 175.0, 105.0, 68.0, 38.0, 8.0, 538.0]
SQL:

assistant: SELECT "Assists" FROM "Table" WHERE "Rebounds" = 121.0;