user: Question: Which Reason has a State (class) of Tennessee (2)?
Columns: ['State (class)', 'Vacator', 'Reason for change', 'Successor', "Date of successor's formal installation"]
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['South Carolina (3)', 'Olin D. Johnston (D)', 'Died April 18, 1965', 'Donald S. Russell (D)', 'April 22, 1965']
SQL:

assistant: SELECT "Reason for change" FROM "Table" WHERE "State (class)" = 'Tennessee (2)';