user: Question: Name the most pick number for Guard and Kansas City Chiefs
Columns: ['Pick #', 'NFL Team', 'Player', 'Position', 'College']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [29.0, 'Baltimore Colts', 'Vernon Maxwell', 'Linebacker', 'Arizona State']
SQL:

assistant: SELECT MAX("Pick #") FROM "Table" WHERE "Position" = 'Guard' AND "NFL Team" = 'Kansas City Chiefs';