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.
One example is below.
Q: The Inheritance Cycle is a series of fantasy books written by Christopher Paolini.
A: The Inheritance Cycle is a tetralogy of young adult high fantasy novels written by American author Christopher Paolini.
Rationale: The output sentence elaborates on the input sentence without changing its general meaning e.g. "tetralogy of young adult high fantasy novels".
Q: Hungary opened its borders to citizens of East Germany on 11 September 1989 .
A:
On 11 September 1989 , Hungary opened its borders to citizens of East Germany and other Central European countries ; this was the first time a Central European border was opened to citizens of Eastern Bloc states .