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.

[Q]: Sentence: 'there is a group of people standing on the beach'. Reverse all words of length '8' in the given sentence.
[A]: there is a group of people gnidnats on the beach


[Q]: Sentence: 'three people in uniform are cutting a cake'. Reverse all words of length '4' in the given sentence.
[A]: three people in uniform are cutting a ekac


[Q]: Sentence: 'two people line up and ride their bikes on a trail of a grassy area'. Reverse all words of length '6' in the given sentence.
[A]:
two elpoep line up and ride their bikes on a trail of a yssarg area