user: Question: What is the Date, when the Year is after 1978, and when the Location is Memorial Stadium (Baltimore)?
Columns: ['Year', 'Date', 'Winner', 'Result', 'Loser', 'Location']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [1970.0, 'October 4', 'Baltimore Colts', '14-6', 'Boston Patriots', 'Harvard Stadium']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Year" > 1978.0 AND "Location" = 'Memorial Stadium (Baltimore)';