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 being towed behind a boat on a board'. Reverse all words of length '4' in the given sentence.
[EX A]: a man being towed behind a taob on a board

[EX Q]: Sentence: 'a bathroom area with writing on the wall and a mirror'. Reverse all words of length '4' in the given sentence.
[EX A]: a bathroom aera htiw writing on the llaw and a mirror

[EX Q]: Sentence: 'a white horse with a carriage behind it'. Reverse all words of length '6' in the given sentence.
[EX A]:
a white horse with a carriage dniheb it