Task: Dialogue Generation
Input (English): F: In Britain, we are often told that people are leaving the big cities to live in the countryside, but is this the same worldwide? ,M: Not at all. If you look at the biggest cities in one thousand nine hundred and fifty, 7 out of the top 10 were in the developed countries. But by the year two thousand, the developing countries will have 8 out of top 10. New York, which in one thousand nine hundred and fifty, was number one with a population of around 12,000,000 will only be the sixth the largest city in the world, but with an extra 2 million. ,F: And London? ,M: London, which was number 2, won't even be in the top ten, its population in one thousand nine hundred and fifty, by the way, was about 10,000,000. ,F: And why is this happening? Why are people moving to the big cities from the country in the developing countries? ,M: The reasons are various, but many are moving to look for work and the problems caused by this are enormous. It said the 26,000,000 people will be living in Mexico City by the year two thousand, with Sao Paulo in Brazil, not far behind.
(A) F: London had a population of 20 million in 1950, but I didn't expect that the population of London would not be in the top ten! (B) F: Wow, I didn't expect that the population of London would not be in the top ten! (C) F: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that? (D) F: New York ranked 11th in 1950, but its population didn't even reach the top ten!
Output (English): B