Complex sentence: In 1955, Raul Cortez founded KCOR-TV (channel 41, now KWEX-DT) in San Antonio, Texas; the station's call letters were later changed to KUAL-TV.
Split into simpler sentences: In 1955, Raul Cortez founded KCOR-TV (channel 41, now KWEX-DT) in San Antonio, Texas. The call letters were later changed to KUAL-TV.