user: Question: Which Nickname has an Enrollment smaller than 501, and a Location of Clarkesville?
Columns: ['Institution', 'Location', 'Nickname', 'Founded', 'Enrollment', 'Joined']
Types: ['text', 'text', 'text', 'real', 'real', 'real']
Sample row: ['Abraham Baldwin Agricultural College', 'Tifton', 'Stallions', 1908.0, 3284.0, 2010.0]
SQL:

assistant: SELECT "Nickname" FROM "Table" WHERE "Enrollment" < 501.0 AND "Location" = 'Clarkesville';