user: Question: What is the affiliation of the University called Explorers?
Columns: ['Institution', 'Location', 'Founded', 'Affiliation', 'Enrollment', 'Year Joined', 'Nickname', 'Conference']
Types: ['text', 'text', 'real', 'text', 'real', 'real', 'text', 'text']
Sample row: ['Drexel University', 'University City', 1891.0, 'Private', 25500.0, 1986.0, 'Dragons', 'Colonial Athletic Association']
SQL:

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