user: Question: Which Year Joined has an Enrollment smaller than 726, and a School of Tri-West?
Columns: ['School', 'Location', 'Mascot', 'Enrollment', 'IHSAA Class', 'County', 'Year Joined']
Types: ['text', 'text', 'text', 'real', 'text', 'text', 'real']
Sample row: ['Crawfordsville', 'Crawfordsville', 'Athenians', 726.0, 'AAA', '54 Montgomery', 1967.0]
SQL:

assistant: SELECT "Year Joined" FROM "Table" WHERE "Enrollment" < 726.0 AND "School" = 'Tri-West';