user: Question: Who was the loser at Municipal Stadium after 1970?
Columns: ['Year', 'Date', 'Winner', 'Result', 'Loser', 'Location']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [1970.0, 'November 1', 'Kansas City Chiefs', '17–17', 'Oakland Raiders', 'Municipal Stadium']
SQL:

assistant: SELECT "Loser" FROM "Table" WHERE "Location" = 'Municipal Stadium' AND "Year" > 1970.0;