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 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 tennis player is holding a tennis racket with the crowd in the background'. Reverse all words of length '3' in the given sentence.
[EX A]: a tennis player is holding a tennis racket with eht crowd in eht background

[EX Q]: Sentence: 'a bike that is leaning against a pole'. Reverse all words of length '4' in the given sentence.
[EX A]:
a ekib taht is leaning against a elop