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

Problem: A passport is a travel document that says that the person who owns it is a citizen of the country on the passport .

Solution: A passport is a travel document , usually issued by a country 's government to its citizens , that certifies the identity and nationality of its holder primarily for the purpose of international travel .