user: Question: Who is the Runner-up in Tournament of Seiersberg
Columns: ['Tournament', 'Winner', 'Runner-up', 'Score', 'Third Place']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Frankfurt', 'John McEnroe', 'Cédric Pioline', '6–2, 6–4', 'Goran Ivanišević']
SQL:

assistant: SELECT "Runner-up" FROM "Table" WHERE "Tournament" = 'Seiersberg';