an Entity references as follows:
The 1971 Dutch Grand Prix was a Formula One motor race held at Zandvoort on 20 June 1971. It was race 4 of 11 in both the 1971 World Championship of Drivers and the 1971 International Cup for Formula One Manufacturers. Due to heavy rain, the track was treacherously wet and slippery, giving a large advantage to "wet-weather men" Ickx and Rodriguez, who also happened to be equipped with highly suitable cars and tyres.