user: Question: Which Tournament has an Opponent of Meike Babel?
Columns: ['Outcome', 'Date', 'Tournament', 'Surface', 'Opponent', 'Score']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Winner', '4 November 1990', 'Brentwood, Tennessee , USA', 'Hard', 'Susan Sloane', '6–3, 7–6']
SQL:

assistant: SELECT "Tournament" FROM "Table" WHERE "Opponent" = 'Meike Babel';