user: Question: Who is affiliated with the Dukes?
Columns: ['School', 'Location', 'Founded', 'Affiliation', 'Nickname']
Types: ['text', 'text', 'real', 'text', 'text']
Sample row: ['James Madison University', 'Harrisonburg, VA', 1908.0, 'Public', 'Dukes']
SQL:

assistant: SELECT "Affiliation" FROM "Table" WHERE "Nickname" = 'Dukes';