user: Question: what is 1976 when 1977 is 3.5?
Columns: ['1976', '1977', '1978', '1979', '1980']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Chile', 'Chile', 'Chile', 'Chile', 'Chile']
SQL:

assistant: SELECT "1976" FROM "Table" WHERE "1977" = '3.5';