Benetton - Ford ผู้สร้างรางวัล Grand Prix กี่คนและตำแหน่งโพลคือ Michael Schumacher?
How many Grand Prix were the winning constructor Benetton - Ford and the pole position was Michael Schumacher?
df = pd.DataFrame(columns=['grand_prix', 'winning_constructor', 'pole_position'])
df[(df['winning_constructor'] == 'Benetton - Ford') & (df['pole_position'] == 'Michael Schumacher')]['grand_prix'].count()