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 small elephant standing next to a forest full of trees'. Reverse all words of length '5' in the given sentence.
[EX A]: a llams elephant standing next to a forest full of seert

[EX Q]: Sentence: 'an umbrella sitting on top of a hill next to a body of water'. Reverse all words of length '4' in the given sentence.
[EX A]: an umbrella sitting on top of a llih txen to a ydob of water

[EX Q]: Sentence: 'a man laying on a bench and a woman next to him touching his face'. Reverse all words of length '4' in the given sentence.
[EX A]:
a man laying on a bench and a woman txen to him touching his ecaf