user: Question: How many won the prize when Regina was the runner-up?
Columns: ['Season', 'The Mole', 'Winner', 'Runner-up', 'International destination']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['1999/2000', 'Deborah', 'Petra (€37.437,-)', 'Robin', 'Australia']
SQL:

assistant: SELECT COUNT("Winner") FROM "Table" WHERE "Runner-up" = 'Regina';