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.

Sentence: 'a cat in a bathroom sitting on a toilet'. Reverse all words of length '3' in the given sentence.
a tac in a bathroom sitting on a toilet

Sentence: 'a train platform at a train stop with brick style flooring'. Reverse all words of length '2' in the given sentence.
a train platform ta a train stop with brick style flooring

Sentence: 'two people on a field playing frisbee with a referee watching'. Reverse all words of length '3' in the given sentence.

owt people on a field playing frisbee with a referee watching