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 Roman Kingdom , also referred to as the Roman monarchy , or the regal period of ancient Rome , was the earliest period of Roman history , when the city and its territory were ruled by kings .

A: The Roman Kingdom was the monarchical government of the city of Rome and its territories .
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Q: Cungagnaq ( Russian : , ; date of birth unknown - d . 1815 ) is venerated as a martyr and saint ( as Peter the Aleut ; Russian : , ) by some jurisdictions of the Eastern Orthodox Church .

A: Peter the Aleut ( d . 1815 ) , also known as Cungagnaq , is a saint in some parts of the Eastern Orthodox Church .
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Q: The Chinese Academy of Sciences ( CAS ; ) , with historical origins in the Academia Sinica during the Republican era and formerly also known by that name , is the national academy for the natural sciences of the People 's Republic of China ( PRC ) .

A:
The Chinese Academy of Sciences ( CAS , formerly : Academia Sinica ) is the supreme institution for all the natural science organisations in China .
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