Complex sentence: In January 2005, UPS Airlines placed an order for 10 freighter versions of the Airbus A380 with an option for 10 more; as part of the deal, the airline reduced an existing commitment for 90 Airbus A300 freighters to 53.
Split into simpler sentences: In January 2005, UPS Airlines placed an order for 10 freighter versions of the Airbus A380 with an option for 10 more. As part of the deal the airline reduced an existing commitment for 90 Airbus A300 freighters to 53.