Complex sentence: In 1948, Gebert, age 7 years, moved with his family to Van Nuys, California, and he performed at the Pasadena Playhouse in Life With Father; after which he was cast in a bit part in Come to the Stable.
Split into simpler sentences: In 1948, Gebert, age 7 years, moved with his family to Van Nuys, California. Gebert performed at the Pasadena Playhouse in Life With Father, after which he was cast in a bit part in Come to the Stable.