Premise: 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 . Theoretical physics is a branch of physics that employs mathematical models and abstractions of physical objects and systems to rationalize , explain and predict natural phenomena .
Hypothesis: Stephen Hawking is a scientist.
Label: ENTAILMENT