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 blue sign sitting on the side of a road next to a tree'. Reverse all words of length '1' in the given sentence.
[EX A]: a blue sign sitting on the side of a road next to a tree

[EX Q]: Sentence: 'man extending arm with three bananas crosswise on it'. Reverse all words of length '4' in the given sentence.
[EX A]: man extending arm htiw three bananas crosswise on it

[EX Q]: Sentence: 'a group of people sitting and standing on a horse sleigh'. Reverse all words of length '5' in the given sentence.
[EX A]:
a puorg of people sitting and standing on a esroh sleigh