Part 1. Definition
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.
Part 2. Example
The Inheritance Cycle is a series of fantasy books written by Christopher Paolini.
Answer: The Inheritance Cycle is a tetralogy of young adult high fantasy novels written by American author Christopher Paolini.
Explanation: The output sentence elaborates on the input sentence without changing its general meaning e.g. "tetralogy of young adult high fantasy novels".
Part 3. Exercise
Tidal locking ( or captured rotation ) is when one side of an astronomical body always faces another .
Answer:
Tidal locking ( also called gravitational locking or captured rotation ) , in the most well-known case , occurs when an orbiting astronomical body always has the same face toward the object it is orbiting .