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.

[EX Q]: Sentence: 'a man is standing on a sidewalk with his bike'. Reverse all words of length '3' in the given sentence.
[EX A]: a nam is standing on a sidewalk with sih bike

[EX Q]: Sentence: 'a group of zebras gather at a watering hole'. Reverse all words of length '1' in the given sentence.
[EX A]: a group of zebras gather at a watering hole

[EX Q]: Sentence: 'a big bunch of people are gathered outside of a big plane'. Reverse all words of length '8' in the given sentence.
[EX A]:
a big bunch of people are derehtag outside of a big plane