<prompt> Qedela le nkulumo elandelayo: UFerrari waqala isizini ka-1991 enethemba elikhulu lokuwina isicoco. UJean Alesi wasayina inkontileka neScuderia lapho uNigel Mansell ebuyela eqenjini likaWilliams. Umphumela omuhle kakhulu we-642 kwaba indawo yesibili eyathathwa u-Alain Prost e-1991 United States Grand Prix, eyayibanjelwe esifundeni somgwaqo sasePhoenix. I-642 yathathelwa indawo yiFerrari 643 ngesikhathi  <response>: Umncintiswano WaseFrance ka-1991. 