Complete the following sentence: Brabham began the 1982 season with two BMW-powered BT50 chassis at the South African Grand Prix, where Piquet and Patrese qualified second and fourth respectively, but retired early in the race. Brabham started the 1982 season with two BMW-powered BT50 chassis at the South African Grand Prix, where Piquet and Patrese qualified second and fourth respectively, but retired early in the race. Team principal Bernie Ecclestone was under pressure from the team's title sponsor, Parmalat, to defend Piquet's championship, and opted to race with the Cosworth-powered BT49 chassis at the Brazilian Grand Prix, which Piquet won but was later disqualified for circumventing the minimum weight limit by running "water-cooled brakes".<unk> Team principal Bernie Ecclestone was under pressure from the team's title sponsor, Parmalat, to defend Piquet's championship, and opted to race with the Cosworth-powered BT49 chassis at the Brazilian Grand Prix, which Piquet won but was later disqualified for circumventing the minimum weight limit by running "water-cooled brakes". Both drivers also raced the BT49 at the Long Beach Grand Prix, and the team boycotted the San Marino Grand Prix as part of the ongoing FISA<unk>FOCA war. Both drivers also raced the BT49 at the Long Beach Grand Prix, and the team boycotted the San Marino Grand Prix as part of the ongoing FISA<unk>FOCA war. For the following race, the Belgian Grand Prix, Piquet and Patrese switched back to the BT50, but Piquet finished three laps behind the winner and Patrese retired. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ <unk> <unk> <unk>
️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️