user: Question: Who was the winner in the Tournament of Graz-Seiersberg?
Columns: ['Tournament', 'Winner', 'Runner-up', 'Score', 'Third Place']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Doha', 'Marcelo Ríos', 'Cédric Pioline', '6–2, 6–2', 'Richard Krajicek']
SQL:

assistant: SELECT "Winner" FROM "Table" WHERE "Tournament" = 'Graz-Seiersberg';