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: 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 .

A: It was so rough , it was given the nickname , " Hurt 's your knees . "
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Q: Philosophy of mind is the branch of philosophy that studies the nature of the mind , mental events , mental functions , mental properties , consciousness and their relationship to the physical body .

A: Philosophy of mind is the branch of philosophy that studies the nature of the mind and how it is linked to the body .
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Q: In chemistry and physics , activation energy is the energy which must be provided to a chemical or nuclear system with potential reactants to result in : a chemical reaction , nuclear reaction , or various other physical phenomena .

A:
The activation energy of a chemical reaction is the minimum energy that is needed to make the reaction happen .
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