user: ### NOW ANSWER:
Question: What is the rank of the Petroleum company who has a revenue of $481.7 billion?
Columns: ['Rank', 'Company', 'Country', 'Industry', 'Revenue in USD']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'Royal Dutch Shell', 'Netherlands †', 'Petroleum', '$481.7 billion']
SQL:

assistant: SELECT MIN("Rank") FROM "Table" WHERE "Industry" = 'Petroleum' AND "Revenue in USD" = '$481.7 billion';