user: Question: What was the opponent on October 28?
Columns: ['Date', 'City', 'Opponent', 'Results¹', 'Type of game']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['March 18', 'Sofia , Bulgaria', 'Bulgaria', '1:0', 'Friendly']
SQL:

assistant: SELECT "Opponent" FROM "Table" WHERE "Date" = 'October 28';