Stephen Hawking was an amazing scientist. He was the first person to explain cosmology with a combination of the relativity and quantum mechanics.
Yes he was amazing.  He recently passed away, right?
Yes, he did. He lived really long considering his health conditions. Before passed, in 2002, he was ranked as the 25th greatest Briton in a BBC poll.
That's interesting.  Did he live in Europe or in the United States?  Do you know?
I think he lived in Europe, in England. Between 1979 and 2009 he was a mathematics professor at the University of Cambridge.
I didn't know he was at the University of Cambridge.  He wrote a lot of books, didn't he?
Yes, he wrote a lot of books. In addition to being an author, he was a theoretical physicist and cosmologist.