user: ### NOW ANSWER:
Question: What is the sum of Week when there were 67,968 people in attendance?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'September 8, 2002', 'at Cincinnati Bengals', 'W 34–6', '53,705']
SQL:

assistant: SELECT SUM("Week") FROM "Table" WHERE "Attendance" = '67,968';