user: Question: On June 29, who was the opponent?
Columns: ['Date', 'City', 'Opponent', 'Results¹', 'Type of game']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['May 28', 'Belgrade', 'Denmark', '5:1', 'Friendly']
SQL:

assistant: SELECT "Opponent" FROM "Table" WHERE "Date" = 'June 29';