Question: What chassis has Patrick Racing as an entrant, with a start greater than 6?
SQL: SELECT "Chassis" FROM "2-1568649-3" WHERE "Entrant" = 'Patrick Racing' AND "Start" > 6.0;

Question: What is the average finish that has 24 as the start, with a year after 1987?
SQL: SELECT AVG("Finish") FROM "2-1568649-3" WHERE "Start" = 24.0 AND "Year" > 1987.0;

Question: What is the lowest year that has lola t93/00 as the chassis with a start leas than 14?
SQL: SELECT MIN("Year") FROM "2-1568649-3" WHERE "Chassis" = 'lola t93/00' AND "Start" < 14.0;

Question: What is the lowest finish that has a start greater than 27, with a year after 1985?
SQL: SELECT MIN("Finish") FROM "2-1568649-3" WHERE "Start" > 27.0 AND "Year" > 1985.0;

Question: What start has a Ford Cosworth DFX as the engine, a year later than 1981, and Kraco Enterprises as the entrant?
SQL: SELECT "Start" FROM "2-1568649-3" WHERE "Engine" = 'Ford Cosworth DFX' AND "Year" > 1981.0 AND "Entrant" = 'Kraco Enterprises';