user: Question: On Sept. 17, how many first downs did the oilers have?
Columns: ['Game', 'Date', 'Opponent', 'Result', 'Oilers points', 'Opponents', 'Oilers first downs', 'Record', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'real', 'real', 'real', 'text', 'real']
Sample row: [1.0, 'Sept. 3', 'at Atlanta Falcons', 'Loss', 14.0, 20.0, 13.0, '0–1', 57328.0]
SQL:

assistant: SELECT "Oilers first downs" FROM "Table" WHERE "Date" = 'Sept. 17';