user: Question: How many people attended the game with a result of w 16-13 and a week earlier than 12?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Venue', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'text', 'real']
Sample row: [1.0, 'September 20, 1970', 'Kansas City Chiefs', 'W 27-10', 'Metropolitan Stadium', 47900.0]
SQL:

assistant: SELECT "Attendance" FROM "Table" WHERE "Result" = 'w 16-13' AND "Week" < 12.0;