user: Question: What is the lowest overall score prior to 1992 with a downhill score of 1?
Columns: ['Season', 'Overall', 'Slalom', 'Giant Slalom', 'Super G', 'Downhill', 'Combined']
Types: ['real', 'real', 'text', 'real', 'real', 'text', 'text']
Sample row: [1990.0, 44.0, '—', 39.0, 12.0, '—', '21']
SQL:

assistant: SELECT MIN("Overall") FROM "Table" WHERE "Downhill" = '1' AND "Season" < 1992.0;