Complex sentence: The church of Santa Cecilia in Trastevere was restored and Santa Maria in Domnica rebuilt by him; he also extensively renovated the basilica of Santa Prassede, which includes the famous "Episcopa Theodora" mosaic of his mother.
Split into simpler sentences: The church of Santa Cecilia in Trastevere was restored and Santa Maria in Domnica rebuilt by him. He also extensively renovated the basilica of Santa Prassede, which includes the famous "Episcopa Theodora" mosaic of his mother.