Simplify the following text for a Grade 6 native English-speaking person.
Original: The Swiss Grand Prix returned in 1975 as a non-Championship Grand Prix just across the border , at the Dijon-Prenois circuit , France .
Simplified: The Swiss Grand Prix did return for two more races , but at the Dijon-Prenois curciut , just across the border in France . In 1975 it was a non-Championship Grand Prix .