user: Question: What week was the game played at Rich Stadium?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Game site', 'Record', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'real']
Sample row: [1.0, 'September 2', 'Cincinnati Bengals', 'W 20–17', 'Mile High Stadium', '1–0', 74178.0]
SQL:

assistant: SELECT "Week" FROM "Table" WHERE "Game site" = 'Rich Stadium';