user: Question: Which week was the game held at Kingdome on October 13, 1991?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Game site', 'Record', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'September 1, 1991', 'at New Orleans Saints', 'L 24-27', 'Louisiana Superdome', '0-1', '68,492']
SQL:

assistant: SELECT "Week" FROM "Table" WHERE "Game site" = 'Kingdome' AND "Date" = 'October 13, 1991';