Question: What is the average Year when there was a Cosworth Straight-4 engine, and the Entrant was Ron Harris / Team Lotus?
SQL: SELECT AVG("Year") FROM "2-1228404-1" WHERE "Engine" = 'Cosworth Straight-4' AND "Entrant" = 'Ron Harris / Team Lotus';

Question: What is the name of the Entrant that has a Chassis of Lotus 25
SQL: SELECT "Entrant" FROM "2-1228404-1" WHERE "Chassis" = 'Lotus 25';

Question: What was the engine when the chassis was a Porsche 718??
SQL: SELECT "Engine" FROM "2-1228404-1" WHERE "Chassis" = 'Porsche 718';

Question: What is the number of points when there was a bmw 269 f2 chassis earlier than 1969?
SQL: SELECT COUNT("Points") FROM "2-1228404-1" WHERE "Chassis" = 'bmw 269 f2' AND "Year" < 1969.0;

Question: What engine was in the Lotus 44 F2 Chassis?
SQL: SELECT "Engine" FROM "2-1228404-1" WHERE "Chassis" = 'Lotus 44 F2';

Question: What year was there a Lotus 25 Chassis?
SQL: SELECT "Year" FROM "2-1228404-1" WHERE "Chassis" = 'Lotus 25';