user: Question: What's the report of the race won by Michael Andretti, with Nigel Mansell driving the fastest lap?
Columns: ['Rnd', 'Race Name', 'Pole position', 'Fastest lap', 'Winning driver', 'Winning team', 'Report']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'Australian FAI Indy Car Grand Prix', 'Nigel Mansell', 'Nigel Mansell', 'Michael Andretti', 'Target Chip Ganassi Racing', 'Report']
SQL:

assistant: SELECT "Report" FROM "Table" WHERE "Winning driver" = 'Michael Andretti' AND "Fastest lap" = 'Nigel Mansell';