user: Question: What is the average Points for a year before 1955?
Columns: ['Year', 'Team', 'Chassis', 'Engine', 'Points']
Types: ['real', 'text', 'text', 'text', 'real']
Sample row: [1955.0, 'Scuderia Lancia', 'Lancia D50', 'Lancia DS50 2.5 V8', 12.0]
SQL:

assistant: SELECT AVG("Points") FROM "Table" WHERE "Year" < 1955.0;