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
Its pattern of two-tier councils remains in use today in large parts of England , although the metropolitan county councils were abolished in 1986 and it was replaced with unitary authorities in many areas in the 1990s .
Answer:
Its pattern of two-tier metropolitan and non-metropolitan county and district councils remains in use today in large parts of England , although the metropolitan county councils were abolished in 1986 , and both county and district councils were replaced with unitary authorities in many areas in the 1990s .