Complex sentence: The Contarelli Chapel, within the church of San Luigi dei Francesi in Rome, is famous for housing three paintings on the theme of Saint Matthew the Evangelist by the Baroque master Caravaggio.
Split into simpler sentences: The Contarelli Chapel is located within the church of San Luigi dei Francesi in Rome. It is famous for housing three paintings on the theme of Saint Matthew the Evangelist by the Baroque master Caravaggio.