Table: pete_lovely_results
Columns: year
team
chassis
engine
points

Question: What year did the Cosworth v8 engine participate in?
SQL: SELECT AVG("year") FROM pete_lovely_results WHERE "engine" = 'cosworth v8'

Question: Which year did the team receive more than 0 points?
SQL: SELECT AVG("year") FROM pete_lovely_results WHERE "points" > 0

Question: Which chassis was used in 1971?
SQL: SELECT "chassis" FROM pete_lovely_results WHERE "year" = 1971