user: ### NOW ANSWER:
Question: what is the 1st prize for May 21
Columns: ['Date', 'Tournament', 'Location', 'Winner', 'Score', '1st prize ( $ )']
Types: ['text', 'text', 'text', 'text', 'text', 'real']
Sample row: ['Jan 9', 'Mercedes Championships', 'Hawaii', 'Tiger Woods (16)', '276 (–16)', 522000.0]
SQL:

assistant: SELECT SUM("1st prize ( $ )") FROM "Table" WHERE "Date" = 'May 21';