Premise: Stephen Hawking . 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 . 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 .
Hypothesis: Stephen Hawking is a scientist.
Label: ENTAILMENT