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 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

[EX Q]: Sentence: 'a fire hydrant at a city intersection near tall buildings'. Reverse all words of length '2' in the given sentence.
[EX A]: a fire hydrant ta a city intersection near tall buildings

[EX Q]: Sentence: 'two elephants that are playing together in the dirt'. Reverse all words of length '8' in the given sentence.
[EX A]:
two elephants that are playing rehtegot in the dirt