user: Question: When did the city of Novi Sad participate?
Columns: ['Date', 'City', 'Opponent', 'Results¹', 'Type of game']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['April 4', 'Split', 'Netherlands', '2:0', "Euro 72' qualifier"]
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "City" = 'Novi Sad';