Complex sentence: Owned and Operated by the Assistant to the Bishop Reverend Dr. Loran E. Mann, who is a former Pittsburgh radio and TV personality (primarily at WPXI-TV), and is still seen occasionally on Pittsburgh-based Cornerstone Television.
Split into simpler sentences: Owned and Operated by the Assistant to the Bishop Reverend Dr. Loran E. Mann. Dr. Mann is a former Pittsburgh radio and TV personality, primarily at WPXI-TV, and is seen occasionally on Pittsburgh-originated Cornerstone Television.