user: Question: Which winner had a location of Iowa?
Columns: ['Date', 'Tournament', 'Location', 'Winner', 'Score', '1st prize ( $ )']
Types: ['text', 'text', 'text', 'text', 'text', 'real']
Sample row: ['Jan 7', 'Glen Campbell-Los Angeles Open', 'California', 'Rod Funseth (2)', '276 (–8)', 27000.0]
SQL:

assistant: SELECT "Winner" FROM "Table" WHERE "Location" = 'Iowa';