user: Question: What year did the Leo Jackson Racing team win?
Columns: ['Year', 'Day', 'Date', 'Driver', 'Team', 'Manufacturer', 'Laps', 'Miles (km)', 'Race Time', 'Average Speed (mph)', 'Report']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['1950', 'Monday', 'September 4', 'Johnny Mantz', 'Hubert Westmoreland', 'Plymouth', '400', '500 (804.672)', '6:38:40', '75.25', 'Report']
SQL:

assistant: SELECT "Year" FROM "Table" WHERE "Team" = 'Leo Jackson Racing';