user: Question: What is the fewest number of points scored by Goulds' Garage (Bristol), engines of Maserati Straight-6, in years before 1956?
Columns: ['Year', 'Entrant', 'Chassis', 'Engine', 'Points']
Types: ['real', 'text', 'text', 'text', 'real']
Sample row: [1954.0, "Goulds' Garage (Bristol)", 'Cooper T23', 'Bristol Straight-6', 0.0]
SQL:

assistant: SELECT MIN("Points") FROM "Table" WHERE "Entrant" = 'Goulds'' Garage (Bristol)' AND "Engine" = 'Maserati Straight-6' AND "Year" < 1956.0;