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 swinging at a tennis ball'. Reverse all words of length '2' in the given sentence.
[A]: a tennis player si swinging ta a tennis ball


[Q]: Sentence: 'a person at a zoo looking over the fence of a giraffe enclosure'. Reverse all words of length '6' in the given sentence.
[A]: a nosrep at a zoo looking over the fence of a giraffe enclosure


[Q]: Sentence: 'a sidewalk lined with yellow markings and a red fire hydrant'. Reverse all words of length '3' in the given sentence.
[A]:
a sidewalk lined with yellow markings dna a der fire hydrant