user: Question: What day did Yugoslavia play Luxembourg?
Columns: ['Date', 'City', 'Opponent', 'Results¹', 'Type of game']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['March 22', 'Sarajevo', 'Uruguay', '2:1', 'Friendly']
SQL:

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