In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.

[Q]: The Royal Institute of International Affairs , commonly known as Chatham House , is a not-for-profit and non-governmental organisation based in London whose mission is to analyse and promote the understanding of major international issues and current affairs .
[A]: Chatham House , also known as the Royal Institute of International Affairs , is a London think tank .


[Q]: In countries with a presidential system , such as the United States , the Cabinet does not function as a collective legislative influence ; rather , their primary role is as an official advisory council to the head of government .
[A]: In other countries , such as the United States , the cabinet has limited power , and is an advisor to the Head of Government .


[Q]: On 14 July 1988 , he established the Fundacio ́ Internacional Josep Carreras per a la Lluita contra la Leuce ̀ mia ( known in English as the Jose ́ Carreras International Leukaemia Foundation ) in Barcelona .
[A]:
He established Jose ́ Carreras International Leukaemia Foundation in Barcelona on July 14 , 1988 .