user: Question: Who was the clerk when the highway commissioner was Albert Lewis?
Columns: ['Years', 'Supervisor', 'Clerk', 'Treasurer', 'Highway Commissioners']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['1846', 'Alfred Pond', 'Francis Brotherton', 'Theron Wallace', 'Richard C. Goyer, John C. Clement, Jon Nash']
SQL:

assistant: SELECT "Clerk" FROM "Table" WHERE "Highway Commissioners" = 'Albert Lewis';