In this task, you need to reverse all words of a given length in the sentence. The number of letters in a word determine its length. For example, the length of the word "apple" is 5.
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Question: Sentence: 'a group of people wearing skis and standing at the top of a ski slope'. Reverse all words of length '7' in the given sentence.

Answer: a group of people gniraew skis and standing at the top of a ski slope


Question: Sentence: 'an oldfashioned safe and roll top desk in a green room'. Reverse all words of length '3' in the given sentence.

Answer: an oldfashioned safe dna roll pot desk in a green room


Question: Sentence: 'everything is covered with snow in the area the people are skiing in'. Reverse all words of length '4' in the given sentence.

Answer:
everything is covered htiw wons in the aera the people are skiing in