user: Question: What is the total number of laps that were completed in 1949?
Columns: ['Year', 'Start', 'Qual', 'Rank', 'Finish', 'Laps']
Types: ['text', 'text', 'text', 'text', 'text', 'real']
Sample row: ['1949', '28', '126.139', '30', '18', 142.0]
SQL:

assistant: SELECT SUM("Laps") FROM "Table" WHERE "Year" = '1949';