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: 'small blue and red bird standing on rear of zebra'. Reverse all words of length '8' in the given sentence.
[EX A]: small blue and red bird gnidnats on rear of zebra

[EX Q]: Sentence: 'a skier is flying through the air while people watch'. Reverse all words of length '7' in the given sentence.
[EX A]: a skier is flying hguorht the air while people watch

[EX Q]: Sentence: 'a group of people gathered around on skis in the snow'. Reverse all words of length '1' in the given sentence.
[EX A]:
a group of people gathered around on skis in the snow