user: Question: What is Prize, when Runner-Up is "Simon Ehne", and when Winner is "David Tighe"?
Columns: ['Season', 'Winner', 'Prize', 'Runner-Up', '3rd place']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['1', 'Dave Ulliott', '£40,000', 'Peter Evans', 'Dave Welch']
SQL:

assistant: SELECT "Prize" FROM "Table" WHERE "Runner-Up" = 'Simon Ehne' AND "Winner" = 'David Tighe';