user: Question: What is the market value of a company in billions that has 172.7 billion in sales? 
Columns: ['Rank', 'Company', 'Headquarters', 'Industry', 'Sales (billion $)', 'Profits (billion $)', 'Assets (billion $)', 'Market Value (billion $)']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'HSBC', 'UK', 'Banking', '146.1', '19.1', '2,349.0', '180.8']
SQL:

assistant: SELECT "Market Value (billion $)" FROM "Table" WHERE "Sales (billion $)" = '172.7';