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 .
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Q: A common way to remember a tragic incident and to remember the victims or casualties of such an event is a commemorative moment of silence .

A: A moment of silence is a common way to remember tragedies .
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Q: Irving Berlin ( born Israel Isidore Beilin ; ; May 11 , 1888 – September 22 , 1989 ) was an American composer and lyricist , widely considered one of the greatest songwriters in American history .

A:
Irving Berlin ( May 11 , 1888 – September 22 , 1989 ) , born Israel Baline , was an American songwriter .
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