Complex sentence: Guglielmo Borremans (Antwerp, 1672-Palermo, 1724) was a painter, born in Antwerp, mainly active in Italy, especially in Naples and Sicily, where he frescoed walls and ceilings of several churches.
Split into simpler sentences: Guglielmo Borremans (Antwerp, 1672-Palermo, 1724) was a painter, born in Antwerp. He was mainly active in Italy, especially in Naples and Sicily, where he frescoed the walls and ceilings of several churches.