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.

[Q]: Sentence: 'a backyard with a chair covered in snow'. Reverse all words of length '4' in the given sentence.
[A]: a backyard htiw a chair covered in wons


[Q]: Sentence: 'a black and white image of a wall with a stop sign on it'. Reverse all words of length '5' in the given sentence.
[A]: a kcalb and etihw egami of a wall with a stop sign on it


[Q]: Sentence: 'a group of people with an umbrella leaving from stormy skies'. Reverse all words of length '7' in the given sentence.
[A]:
a group of people with an umbrella gnivael from stormy skies