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 are many animals standing on the top of this mountain'. Reverse all words of length '4' in the given sentence.
[A]: there are ynam animals standing on the top of siht mountain


[Q]: Sentence: 'a crowd of people are walking around some tents in the street'. Reverse all words of length '6' in the given sentence.
[A]: a crowd of elpoep are walking dnuora some tents in the teerts


[Q]: Sentence: 'a passenger train moves along tracks near a field and trees'. Reverse all words of length '1' in the given sentence.
[A]:
a passenger train moves along tracks near a field and trees