Table:
text: 1971 Formula One season
Season review
Season review
Race Circuit Date_ Pole_position Fastest_lap Winning_driver Constructor_ Tyre Report
South African Grand Prix Kyalami 6 March Jackie Stewart Mario Andretti Mario Andretti Ferrari F Report
Spanish Grand Prix Montjuïc 18 April Jacky Ickx Jacky Ickx Jackie Stewart Tyrrell - Ford G Report
Monaco Grand Prix Monaco 23 May Jackie Stewart Jackie Stewart Jackie Stewart Tyrrell - Ford G Report
Dutch Grand Prix Zandvoort 20 June Jacky Ickx Jacky Ickx Jacky Ickx Ferrari F Report
French Grand Prix Paul Ricard 4 July Jackie Stewart Jackie Stewart Jackie Stewart Tyrrell - Ford G Report
British Grand Prix Silverstone 17 July Clay Regazzoni Jackie Stewart Jackie Stewart Tyrrell - Ford G Report

Question: Who was the winning Dutch Grand Prix driver in the 1971 Formula 1 season in review?