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 girl is holding a trophy and a tennis racket'. Reverse all words of length '4' in the given sentence.
[A]: a lrig is holding a trophy and a tennis racket


[Q]: Sentence: 'a young boy plays with a phone sitting on the ground'. Reverse all words of length '6' in the given sentence.
[A]: a young boy plays with a phone sitting on the dnuorg


[Q]: Sentence: 'a tennis player is stretching his arms while the crowd looks'. Reverse all words of length '2' in the given sentence.
[A]:
a tennis player si stretching his arms while the crowd looks