user: Question: What is the attendance when the opponent was the Houston Oilers?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'September 6, 1992', 'at Chicago Bears', 'L 27-24', '63,672']
SQL:

assistant: SELECT "Attendance" FROM "Table" WHERE "Opponent" = 'Houston Oilers';