user: Question: Who is the opponent in the final of the Tournament of Blenheim?
Columns: ['Date', 'Tournament', 'Surface', 'Opponent in the final', 'Score']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['June 28, 1999', 'Alexandroupolis', 'Clay', 'Cyril Saulnier', '6–4, 4–6, 6–4']
SQL:

assistant: SELECT "Opponent in the final" FROM "Table" WHERE "Tournament" = 'Blenheim';