user: Question: What is the earliest year a chassis of Ferrari 312T and results of 31 points occurred?
Columns: ['Year', 'Entrant', 'Chassis', 'Engine', 'Points']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1970.0, 'Scuderia Ferrari SpA', 'Ferrari 312B', 'Ferrari Flat-12', '33']
SQL:

assistant: SELECT MIN("Year") FROM "Table" WHERE "Chassis" = 'Ferrari 312T' AND "Points" = '31';