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.

[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.
[A]: a tennis player is holding a tennis racket with eht crowd in eht background


[Q]: Sentence: 'a black cat sitting on top of a laptop on a table'. Reverse all words of length '5' in the given sentence.
[A]: a kcalb cat sitting on top of a laptop on a elbat


[Q]: Sentence: 'a man holding a tennis racket up in anticipation of a ball'. Reverse all words of length '1' in the given sentence.
[A]:
a man holding a tennis racket up in anticipation of a ball