Question: What engine did Scuderia Ambrosiana with fewer than 4 points have?
SQL: SELECT "Engine" FROM "2-1235870-1" WHERE "Entrant" = 'Scuderia Ambrosiana' AND "Points" < 4.0;

Question: What chassis had fewer than 0 points in a year before 1954?
SQL: SELECT "Chassis" FROM "2-1235870-1" WHERE "Year" < 1954.0 AND "Points" = 0.0;

Question: What chassis had an entrant of G.A. Vandervell?
SQL: SELECT "Chassis" FROM "2-1235870-1" WHERE "Entrant" = 'G.A. Vandervell';