I want to know the answer to the following question:
Who purchased the International Petroleum Exchange in 2001?
All the background I'm provided with is that "Michael Greenberger specifically named the Atlanta-based IntercontinentalExchange, founded by Goldman Sachs, Morgan Stanley and BP as playing a key role in speculative run-up of oil futures prices traded off the regulated futures exchanges in London and New York.". Is that enough to answer the question?
Answer: no