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: 'airplane flying in front of mountains and clouds'. Reverse all words of length '2' in the given sentence.
[EX A]: airplane flying ni front fo mountains and clouds

[EX Q]: Sentence: 'a baby elephant in the middle of a field'. Reverse all words of length '3' in the given sentence.
[EX A]: a baby elephant in eht middle of a field

[EX Q]: Sentence: 'a group of small birds walking across a body of water'. Reverse all words of length '6' in the given sentence.
[EX A]:
a group of small birds walking ssorca a body of water