user: Question: what is the highest year that the U.S. captain is Ken Venturi?
Columns: ['Year', 'Venue', 'Location', 'Winning team', 'Score', 'U.S. Captain', 'International Captain']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [2013.0, 'Muirfield Village', 'Dublin, Ohio', 'United States', '18½–15½', 'Fred Couples', 'Nick Price']
SQL:

assistant: SELECT MAX("Year") FROM "Table" WHERE "U.S. Captain" = 'Ken Venturi';