Complex sentence: Father Paul Portnyagin, born in Vladivostok, Russia, in 1903, converted from the Eastern Orthodox Church to the Catholic faith shortly after migrating to China during the Russian Civil War.
Split into simpler sentences: Father Paul Portnyagin was born in Vladivostok, Russia, in 1903. He converted from the Eastern Orthodox Church to the Catholic faith shortly after migrating to China during the Russian Civil War.