user: Question: What is the total number of spectators on week 4?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'real']
Sample row: [1.0, 'September 3, 1983 (Sat)', 'Philadelphia Eagles', 'L 17-22', 55775.0]
SQL:

assistant: SELECT SUM("Attendance") FROM "Table" WHERE "Week" = 4.0;