You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
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.

The Inheritance Cycle is a series of fantasy books written by Christopher Paolini.
Solution: The Inheritance Cycle is a tetralogy of young adult high fantasy novels written by American author Christopher Paolini.
Why? The output sentence elaborates on the input sentence without changing its general meaning e.g. "tetralogy of young adult high fantasy novels".

New input: VOR , short for VHF omnidirectional radio range , is a type of radio navigation system for aircraft , enabling them to find their position and stay on course by receiving radio signals emitted by a network of radio beacons .
Solution:
Very High Frequency ( VHF ) Omni-Directional Range ( VOR ) is a type of short-range radio navigation system for aircraft , enabling aircraft with a receiving unit to determine its position and stay on course by receiving radio signals transmitted by a network of fixed ground radio beacons .