user: Question: What day had over 51319 attending week 4?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'real']
Sample row: [1.0, 'September 28, 1958', 'at Los Angeles Rams', 'W 30–27', 69993.0]
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Attendance" > 51319.0 AND "Week" = 4.0;