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: A collusion is a secret agreement between two or more people or groups , usually to create unlawful advantages over other groups .
Solution:
A secret agreement between two or more parties to limit open competition by deceiving , misleading , or defrauding others of their legal rights , or to obtain an objective forbidden by law typically by defrauding or gaining an unfair market advantage is an example of collusion .