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: 'giraffes are standing in the grass near water and trees'. Reverse all words of length '4' in the given sentence.
[EX A]: giraffes are standing in the grass raen water and trees

[EX Q]: Sentence: 'a group of five people in white snow outfits cross country skiing'. Reverse all words of length '5' in the given sentence.
[EX A]: a puorg of five people in etihw snow outfits ssorc country skiing

[EX Q]: Sentence: 'a small wave is best used to learn how to surf'. Reverse all words of length '3' in the given sentence.
[EX A]:
a small wave is best used to learn woh to surf