user: Question: What is the Tournament against Vladimir Zednik?
Columns: ['Outcome', 'Date', 'Tournament', 'Surface', 'Opponent', 'Score']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Runner-up', '12 December 1977', 'Adelaide , Australia', 'Grass', 'Tim Gullikson', '6–3, 4–6, 6–3, 2–6, 4–6']
SQL:

assistant: SELECT "Tournament" FROM "Table" WHERE "Opponent" = 'Vladimir Zednik';