user: Question: What is BP's lowest sales?
Columns: ['Rank', 'Company', 'Country', 'Industry', 'Sales (billion $)', 'Profits (billion $)', 'Assets (billion $)', 'Market Value (billion $)']
Types: ['real', 'text', 'text', 'text', 'real', 'real', 'real', 'real']
Sample row: [1.0, 'Citigroup', 'USA', 'Banking', 108.28, 17.05, 14.1, 247.66]
SQL:

assistant: SELECT MIN("Sales (billion $)") FROM "Table" WHERE "Company" = 'BP';