Complex sentence: The popularity of the radio program was such that he created his own magazine, and in 1945 he opened his own establishment, Tom Breneman's Restaurant, located on Vine Street off Sunset Boulevard.
Split into simpler sentences: The popularity of the radio program was such that he developed spin-off enterprises in media and other areas. In 1945 he opened his own establishment, Tom Breneman's Restaurant, located on Vine Street off Sunset Boulevard.