user: ### NOW ANSWER:
Question: what is the engine when the rounds ar All, the tyre is M and the driver is David Coulthard?
Columns: ['Entrant', 'Constructor', 'Chassis', 'Engine †', 'Tyre', 'Driver', 'Rounds']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Scuderia Ferrari Marlboro', 'Ferrari', 'F2001 F2002', 'Ferrari 050 Ferrari 051', 'B', 'Michael Schumacher', 'All']
SQL:

assistant: SELECT "Engine †" FROM "Table" WHERE "Rounds" = 'All' AND "Tyre" = 'M' AND "Driver" = 'David Coulthard';