Complex sentence: In the summer of 1938, van Meegeren moved to Nice, using the proceeds from the sale of "The Supper at Emmaus" to buy a 12-bedroom estate at Les Arènes de Cimiez.
Split into simpler sentences: In the summer of 1938, van Meegeren moved to Nice. Using the proceeds from the sale of "The Supper at Emmaus", he bought a 12-bedroom estate at Les Arènes de Cimiez.