user: Question: What is the kickoff time for the Hubert H. Humphrey Metrodome?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Kickoff [a ]', 'Game site', 'Attendance', 'Record']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Week', 'Date', 'Opponent', 'Result', 'Kickoff [a ]', 'Game site', 'Attendance', 'Record']
SQL:

assistant: SELECT "Kickoff [a ]" FROM "Table" WHERE "Game site" = 'Hubert H. Humphrey Metrodome';