Complex sentence: He studied art in Haarlem under the landscape painter, Nicolaes Berchem, and beginning in 1650, worked as a painter and servant for a linen-merchant and art collector named Justus de la Grange.
Split into simpler sentences: He studied art in Haarlem under the landscape painter, Nicolaes Berchem. Beginning in 1650, he worked as a painter and servant for a linen-merchant and art collector named Justus de la Grange.