user: Question: What is the lowest attendance that has l 42-35 as the result, with a week less than 13?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'real']
Sample row: [1.0, 'September 19, 1977', 'at Pittsburgh Steelers', 'L 27-0', 48046.0]
SQL:

assistant: SELECT MIN("Attendance") FROM "Table" WHERE "Result" = 'l 42-35' AND "Week" < 13.0;