Complex sentence: Guglielmo Beneventano's architect was Luciano Alì who transformed the medieval building which had been used as a seat of local government into a private house, the ornate Baroque architecture continues through into the interior with sculptures by the Palermitano Lombardic Gregorio, and frescoes by Ermenegido Martorana.
Split into simpler sentences: Guglielmo Beneventano's architect was Luciano Alì, who transformed the medieval building, which had been used as a seat of local government into a private house. The ornate Baroque architecture continues into the interior with sculptures by the Palermitano Lombardic Gregorio, and frescoes by Ermenegido Martorana.