Premise: Roger Heman Sr. (February 27, 1898 – March 14, 1969) was an American sound engineer. He won an Academy Award for Best Special Effects and was nominated for four more in the same category. He worked on more than 350 films during his career. His son was also a sound engineer.
Hypothesis: Roger Heman Sr. was nominated for five Academy Awards for Best Special Effects and won best American sound engineer.