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: In computability theory , the Church – Turing thesis ( also known as computability thesis , the Turing – Church thesis , the Church – Turing conjecture , Church 's thesis , Church 's conjecture , and Turing 's thesis ) is a hypothesis about the nature of computable functions .

Answer: The Church-Turing thesis ( also known as Church 's thesis , Church 's conjecture and Turing 's thesis ) is a statement about computers .


Question: Unfortunately , the coaster gained a reputation as a rough and uncomfortable ride experience , which earned the coaster the nickname , " Hurt-Your-Knees " by roller coaster enthusiasts .

Answer: It was so rough , it was given the nickname , " Hurt 's your knees . "


Question: In cryptography , a Feistel cipher is a symmetric structure used in the construction of block ciphers , named after the German-born physicist and cryptographer Horst Feistel who did pioneering research while working for IBM ( USA ) ; it is also commonly known as a Feistel network .

Answer:
In cryptography , a Feistel cipher is a symmetric structure used in the construction of block ciphers , named after the German IBM cryptographer ; it is also commonly known as a Feistel network .