Table:
text: Kenny Roberts
Motorcycle Grand Prix results
Motorcycle Grand Prix results
Year_ Class_ Team Points Rank_ Wins
1974 250cc Yamaha 10 19th 0
1978 250cc Yamaha 54 4th 2
1978 500cc Yamaha 110 1st 4
1979 500cc Yamaha 113 1st 5
1980 500cc Yamaha 87 1st 3
1981 500cc Yamaha 74 3rd 2
1982 500cc Yamaha 68 4th 2
1983 500cc Yamaha 142 2nd 6

Question: Which class was 2nd for Kenny Roberts?

Question: How many wins did Kenny Roberts have in the 500 class in 1979?

Question: What is the sum of points for wins under 6 and rank 2 for Kenny Roberts?

Question: Which class had 110 points under Kenny Roberts?

Question: What is the average year with 142 points for Kenny Roberts?