Complex sentence: As the Nieuport company were preoccupied with later types, production was undertaken by Lioré et Olivier who had built 170 Nieuport 28As and parts for another 100 by the end of the war, with the remainder of the order being cancelled.
Split into simpler sentences: As the Nieuport company were preoccupied with later types, production was to be undertaken by Lioré et Olivier. With the end of the war 170 Lioré et Olivier built Nieuport 28As, with parts for another 100, were purchased, the rest of the order being cancelled.