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: 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 astronomy , cosmogony refers to the study of the origin of particular astrophysical objects or systems , and is most commonly used in reference to the origin of the universe , the Solar System , or the Earth Moon system .

Answer: In astronomy , cosmogony is the study of the origin of things like the universe , the Solar System , or the Earth Moon system .

Question: The American Psychiatric Association ( APA ) is the main professional organization of psychiatrists and trainee psychiatrists in the United States , and the largest psychiatric organization in the world .

Answer:
The American Psychiatric Association ( APA ) is a group of psychiatrists in the United States .