Complex sentence: In 1954 Mercedes-Benz returned to Formula One racing to compete in the Grand Prix World Championship for the first time, using the technologically advanced Mercedes-Benz W196 which was run in both open-wheeled and streamlined forms.
Split into simpler sentences: In 1954 Mercedes-Benz returned to Formula One racing to compete in the Grand Prix World Championship for the first time. The car, the Mercedes-Benz W196 was run in both open-wheeled and streamlined forms.