user: Question: What was the average attendance when the opponent was at Philadelphia Eagles and the week was later than week 6?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'TV Time', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'text', 'real']
Sample row: [1.0, 'September 4, 1994', 'at Cincinnati Bengals', 'W 28–20', 'NBC 1:00et', 52778.0]
SQL:

assistant: SELECT AVG("Attendance") FROM "Table" WHERE "Week" > 6.0 AND "Opponent" = 'at Philadelphia Eagles';