Peter : Do you know what shape of the U.S. president’s official office in
the White House?
Ann : I’m sorry. I don’t know. What shape is it?
Peter : It’s oval. That’s why it’s called “The Oval Office”.
Ann : Oh I see.
Peter : And do you know what shape is the Paro Ta Dzong museum in Bhutan?
Ann : Is it circular?
Peter : Yes. That’s correct and it’s very famous.