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

A: a man being towed behind a taob on a board
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Q: Sentence: 'a couple of women sitting on a bench with a dog'. Reverse all words of length '4' in the given sentence.

A: a couple of women sitting on a bench htiw a dog
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Q: Sentence: 'a little boy that is standing in the dirt with a bat'. Reverse all words of length '4' in the given sentence.

A:
a little boy taht is standing in the trid htiw a bat
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