user: Question: Which week has a result L 56-3?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'September 11, 1966', 'Los Angeles Rams', 'L 19-14', '54,418']
SQL:

assistant: SELECT "Week" FROM "Table" WHERE "Result" = 'L 56-3';