user: Question: Who did the cowboys play when 65,537 attended?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'September 8, 2002', 'at Houston Texans', 'L 19–10', '69,604']
SQL:

assistant: SELECT "Opponent" FROM "Table" WHERE "Attendance" = '65,537';