user: Question: What's the largest shirt number when the cap number is 5?
Columns: ['Cap Number', 'Date', 'Position', 'Shirt Number', 'Home or Away', 'Venue', 'Result', 'Score']
Types: ['real', 'text', 'text', 'real', 'text', 'text', 'text', 'text']
Sample row: [1.0, '9 February 2008', 'Wing', 14.0, 'Home', 'Millennium Stadium , Cardiff', 'Win', '30–15']
SQL:

assistant: SELECT MAX("Shirt Number") FROM "Table" WHERE "Cap Number" = 5.0;