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.

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

Sentence: 'one white and black sheep and one brown and black sheep'. Reverse all words of length '5' in the given sentence.
one etihw and kcalb peehs and one nworb and kcalb peehs

Sentence: 'a giraffe is is facing the camera while the rear of another giraffe appears in the background'. Reverse all words of length '3' in the given sentence.

a giraffe is is facing eht camera while eht rear of another giraffe appears in eht background