user: Question: In week 9 who were the opponent? 
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Game site', 'Record', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'real']
Sample row: [1.0, 'September 16, 1937', 'New York Giants', 'W 13–3', 'Griffith Stadium', '1–0', 25000.0]
SQL:

assistant: SELECT "Opponent" FROM "Table" WHERE "Week" = 9.0;