Complex sentence: Dial Duwayne Ryder (June 12,1938--October 20,2011) was a gunsmith at the Irving, Texas Sports Shop who stated that he possessed a record of Lee Harvey Oswald's name.
Split into simpler sentences: Dial Duwayne Ryder (June 12,1938--October 20,2011) was an American gunsmith. Ryder worked at the Irving, Texas Sports Shop and stated that he possessed a record of Lee Harvey Oswald's name.