Table: tac_institutions
Columns: institution
location
founded
type
enrollment
nickname
joined
left
current_conference

Question: what is the nickname founded in 1902?
SQL: SELECT "nickname" FROM tac_institutions WHERE "founded" = 1902

Question: where is the enrollment 4259?
SQL: SELECT "location" FROM tac_institutions WHERE "enrollment" = 4259

Question: what is the year union university was founded?
SQL: SELECT "founded" FROM tac_institutions WHERE "institution" = 'Union University'