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 assisting a person on a horse on a race track'. Reverse all words of length '3' in the given sentence.
[EX A]: a nam assisting a person on a horse on a race track

[EX Q]: Sentence: 'a man on skis is under an empty ski lift'. Reverse all words of length '1' in the given sentence.
[EX A]: a man on skis is under an empty ski lift

[EX Q]: Sentence: 'a pizza that is as big as the plate'. Reverse all words of length '2' in the given sentence.
[EX A]:
a pizza that si sa big sa the plate