Question: What is the average wins in 250cc class for Bultaco with 8 points later than 1966?
SQL: SELECT AVG("Wins") FROM "2-15129536-3" WHERE "Class" = '250cc' AND "Team" = 'Bultaco' AND "Year" > 1966.0 AND "Points" = 8.0;

Question: Which class corresponds to more than 2 points, wins greater than 0, and a year earlier than 1973?
SQL: SELECT "Class" FROM "2-15129536-3" WHERE "Points" > 2.0 AND "Year" < 1973.0 AND "Wins" > 0.0;

Question: What is the sum of all points in 1975 with 0 wins?
SQL: SELECT SUM("Points") FROM "2-15129536-3" WHERE "Year" = 1975.0 AND "Wins" < 0.0;