user: Question: When did the club UNAM played the first season in top division?
Columns: ['Club', 'First season in top division', 'Number of seasons in top division', 'First season of current spell in top division', 'Number of seasons in Liga MX', 'Top division titles']
Types: ['text', 'text', 'real', 'text', 'real', 'real']
Sample row: ['América', '1943-44', 89.0, '1943-44', 89.0, 11.0]
SQL:

assistant: SELECT "First season in top division" FROM "Table" WHERE "Club" = 'UNAM';