Question: What's the total points that Scuderia Ferrari with a Ferrari V12 engine have before 1971?
SQL: SELECT SUM("Points") FROM "2-159975-1" WHERE "Year" < 1971.0 AND "Entrant" = 'Scuderia Ferrari' AND "Engine" = 'Ferrari V12';

Question: What's the least amount of points that Walter Wolf Racing had after 1974?
SQL: SELECT MIN("Points") FROM "2-159975-1" WHERE "Year" > 1974.0 AND "Entrant" = 'Walter Wolf Racing';