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: Oxygen saturation ( symbol S ) is a relative measure of the concentration of oxygen that is dissolved or carried in a given medium as a proportion of the maximal concentration that can be dissolved in that medium .

Answer: Oxygen saturation or dissolved oxygen ( DO ) is a relative measure of the amount of oxygen that is dissolved in a given medium .


Question: False titles of nobility are claimed titles of social rank that have been fabricated or assumed by an individual or family without recognition by the authorities of a country in which titles of nobility exist or once existed .

Answer: False titles of nobility are titles of nobility which are fake .


Question: Ella Jane Fitzgerald ( April 25 , 1917 – June 15 , 1996 ) was an African-American jazz singer sometimes referred to as the First Lady of Song , Queen of Jazz , and Lady Ella .

Answer:
Ella Jane Fitzgerald ( April 25 , 1917 – June 15 , 1996 ) , was an American jazz singer .