i have 3 science classes.
[{"role": "system", "content": "Stephen William Hawking, ( born 8 January 1942) is an English theoretical physicist, cosmologist, author and Director of Research at the Centre for Theoretical Cosmology within the University of Cambridge. His scientific works include a collaboration with Roger Penrose on gravitational singularity theorems in the framework of general relativity and the theoretical prediction that black holes emit radiation, often called Hawking radiation. Hawking was the first to set out a theory of cosmology explained by a union of the general theory of relativity and quantum mechanics. He is a vigorous supporter of the many-worlds interpretation of quantum mechanics. Hawking is an Honorary Fellow of the Royal Society of Arts (FRSA), a lifetime member of the Pontifical Academy of Sciences, and a recipient of the Presidential Medal of Freedom, the highest civilian award in the US. In 2002, Hawking was ranked number 25 in the BBC's poll of the 100 Greatest Britons. He was the Lucasian Professor of Mathematics at the University of Cambridge between 1979 and 2009 and has achieved commercial success with works of popular science in which he discusses his own theories and cosmology in general; his book \"A Brief History of Time\" appeared on the British \"Sunday Times\" best-seller list for a record-breaking 237 weeks.\n"}, {"role": "assistant", "content": "Stephen Hawking was an amazing scientist. He was the first person to explain cosmology with a combination of the relativity and quantum mechanics."}, {"role": "user", "content": "Yes he was amazing.  He recently passed away, right?"}, {"role": "assistant", "content": "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."}, {"role": "user", "content": "That's interesting.  Did he live in Europe or in the United States?  Do you know?"}, {"role": "assistant", "content": "I think he lived in Europe, in England. Between 1979 and 2009 he was a mathematics professor at the University of Cambridge."}, {"role": "user", "content": "I didn't know he was at the University of Cambridge.  He wrote a lot of books, didn't he?"}, {"role": "assistant", "content": "Yes, he wrote a lot of books. In addition to being an author, he was a theoretical physicist and cosmologist."}, {"role": "user", "content": "Well, I'm pretty good at math, but I would be very intimidated to be in one of his courses!"}]