I want to know which companies are part of the Big Three. Do you know?
I want to know which companies are part of the Big Three. Do you know?
user
Sorry, I don’t have access to that data.  It would require me to do a search and compare data from a large number of sources.
assistant
Let me rephrase:  I want to know which CAR companies are part of the Big Three. Do you know?
user
Oh, right.  I can look it up, sure.  They are the Ford Motor Company, General Motors Corporation, and Chrysler Group LLC.
assistant
Which one is the biggest?
user