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.
Can we infer the following?
Roger Heman Sr. had only 1 son named Roger Heman Jr.

Select from:
*Yes
*It's impossible to say
*No
The answer is:
It's impossible to say