generate questions: The mosaics of St. Peter's often show lively Baroque compositions based on designs or canvases from like Ciro Ferri, Guido Reni, Domenichino, Carlo Maratta, and many others. Raphael is represented by a mosaic replica of this last painting, the Transfiguration. Many different artists contributed to the 17th- and 18th-century mosaics in St. Peter's, including Giovanni Battista Calandra, Fabio Cristofari (died 1689), and Pietro Paolo Cristofari (died 1743). Works of the Fabbrica were often used as papal gifts.
How is Raphael portrayed in St. Peter's? {sep_token} What year did Pietro Paolo Cristofari die? {sep_token} What was the art of the Fabbrica usually used for? {sep_token} What was the name of the painting used to represent raphael in St. Peter's? {sep_token} The mosaics of St.Peter's are often based on what? {sep_token}