Suppose Stephen Hawking was an English theoretical physicist, cosmologist, and author who was director of research at the Centre for Theoretical Cosmology at the University of Cambridge at the time of his death. Among his scientific works, Hawking proved that black holes can emit radiation, which is now known as Hawking radiation.
Can we infer that "Stephen Hawking was a specialist in the field of microbiology."? Yes, no, or maybe?