Complex sentence: Mary Panton, née Mary DeMoss, Mary VonBreck, is a former member of the Church of Scientology and founder of the Foundation for Religious Tolerance of Florida, a group which, in 2000, protested the production of the anti-Scientology film, The Profit.
Split into simpler sentences: Mary Panton, née Mary DeMoss, Mary VonBreck, is a former member of the Church of Scientology. When a participating member in Scientology, Mary DeMoss was the founding member of the Foundation for Religious Tolerance of Florida, a group which, in 2000, protested the production of the anti-Scientology film, The Profit.