In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.
Q: The Airbus A318 is a European airliner designed and built from the Airbus A319 .
A: 
The Airbus A318 is the smallest member of the Airbus A320 family of short- to medium-range , narrow-body , commercial passenger twin-engine jet airliners manufactured by Airbus .