Simplify the following text for a Grade 7 native English-speaking person.
Original: A further non-championship event took place at Imola in 1979 , which was won by Niki Lauda for Brabhamâ `` Alfa Romeo .
Simplified: An additional non-championship event took place at Imola in 1979 . This race was won by Niki Lauda for Brabham-Alfa Romeo .