user: Question: When were the Spartans founded?
Columns: ['Institution', 'Location', 'Founded', 'Affiliation', 'Enrollment', 'Team Nickname', 'Primary conference']
Types: ['text', 'text', 'real', 'text', 'real', 'text', 'text']
Sample row: ['Central Michigan University', 'Mount Pleasant, Michigan', 1892.0, 'Public', 26788.0, 'Chippewas', 'Mid-American ( Division I )']
SQL:

assistant: SELECT "Founded" FROM "Table" WHERE "Team Nickname" = 'Spartans';