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 that is sitting in a field with a phone'. Reverse all words of length '4' in the given sentence.
[EX A]: a man taht is sitting in a field htiw a phone

[EX Q]: Sentence: 'a bunch of umbrellas are up in the air'. Reverse all words of length '9' in the given sentence.
[EX A]: a bunch of sallerbmu are up in the air

[EX Q]: Sentence: 'a fire hydrant sits next to a river and mountain'. Reverse all words of length '5' in the given sentence.
[EX A]:
a fire hydrant sits next to a revir and mountain