premise: Al Overton (May 20, 1912 – August 1, 1985) was an American sound engineer. He was nominated for an Academy Award in the category Best Sound for the film "Diamonds Are Forever". He worked on more than 90 films between 1954 and 1975. His son, Al Overton, Jr., was later nominated for four Academy Awards for Best Sound.
hypothesis: Al Overton died before the age of 70.
reason: Al Overton (May 20, 1912 – August 1, 1985) died at the age of 73.