user: ### NOW ANSWER:
Question: Who did the Hawks play on 12/21/1973?
Columns: ['Game', 'Date', 'Opponent', 'Score', 'Record']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [24.0, '12/1/1973', 'Seattle SuperSonics', '120 - 110', '13 - 11']
SQL:

assistant: SELECT "Opponent" FROM "Table" WHERE "Date" = '12/21/1973';