user: Question: From what county was the team that left the conference in 1993?
Columns: ['School', 'City', 'Team Name', 'County', 'Year Joined', 'Year Left']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Attica', 'Attica', 'Red Ramblers', '23 Fountain', '1947', '1966']
SQL:

assistant: SELECT "County" FROM "Table" WHERE "Year Left" = '1993';