user: Question: Name the highest Profits (billion $) which has a Company of Walmart?
Columns: ['Rank', 'Company', 'Headquarters', 'Industry', 'Sales (billion $)', 'Profits (billion $)', 'Assets (billion $)', 'Market Value (billion $)']
Types: ['real', 'text', 'text', 'text', 'real', 'real', 'real', 'real']
Sample row: [1.0, 'General Electric', 'USA', 'Conglomerate', 182.52, 17.41, 797.77, 88.77]
SQL:

assistant: SELECT MAX("Profits (billion $)") FROM "Table" WHERE "Company" = 'Walmart';