user: ### NOW ANSWER:
Question: Which round had Michael Schumacher in the pole position, David Coulthard with the fastest lap, and McLaren - Mercedes as the winning constructor?
Columns: ['Round', 'Grand Prix', 'Pole Position', 'Fastest Lap', 'Winning Driver', 'Winning Constructor', 'Report']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'Australian Grand Prix', 'Mika Häkkinen', 'Rubens Barrichello', 'Michael Schumacher', 'Ferrari', 'Report']
SQL:

assistant: SELECT COUNT("Round") FROM "Table" WHERE "Pole Position" = 'Michael Schumacher' AND "Fastest Lap" = 'David Coulthard' AND "Winning Constructor" = 'McLaren - Mercedes';