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.
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Question: Cygnus X-1 ( abbreviated Cyg X-1 ) is a galactic X-ray source in the constellation Cygnus , and the first such source widely accepted to be a black hole .

Answer: Cygnus X-1 was the first X-ray source accepted as a black hole .


Question: It originally referred to an oath taken by jurors to tell the truth , i.e. , to say what is true , what is objectively accurate or subjectively honest , or both .

Answer: It originally referred to an oath taken by jurors to tell the truth .


Question: " Sho ̄ kaku " herself was unable to conduct further aircraft operations , with her flight deck heavily damaged , and she required almost three months of repair in Japan .

Answer:
" Sho ̄ kaku " had a damaged flight deck which required three months of repair in Japan .