user: Question: What is the pole position for the race with the fastest lap by Nelson Piquet and the constructor is Ferrari?
Columns: ['Rnd', 'Race', 'Date', 'Location', 'Pole Position', 'Fastest Lap', 'Race Winner', 'Constructor', 'Report']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'South African Grand Prix', '23 January', 'Kyalami', 'René Arnoux', 'Alain Prost', 'Alain Prost', 'Renault', 'Report']
SQL:

assistant: SELECT "Pole Position" FROM "Table" WHERE "Fastest Lap" = 'Nelson Piquet' AND "Constructor" = 'Ferrari';