user: Question: What was the earliest week the team played the chicago cardinals in front of less than 25312?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'real']
Sample row: [1.0, 'September 30, 1956', 'at Chicago Cardinals', 'L 9–7', 20966.0]
SQL:

assistant: SELECT MIN("Week") FROM "Table" WHERE "Opponent" = 'chicago cardinals' AND "Attendance" < 25312.0;