user: Question: During what weak of the season was the game played on October 4, 1987?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Game site', 'Record', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'September 13, 1987', 'at Denver Broncos', 'L 17-40', 'Mile High Stadium', '0-1', '75,999']
SQL:

assistant: SELECT "Week" FROM "Table" WHERE "Date" = 'October 4, 1987';