Complex sentence: Historically, Somali Airlines used a total of 7 Boeing 707.Three leased, twoAirbus A310, and one Boeing 747-300 joined the fleet in late 1988 and early 1989.
Split into simpler sentences: Historically, Somali Airlines used a total of 7 Boeing 707. Two leased Airbus A310 joined the fleet in late 1988 and early 1989.