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

[EX Q]: Sentence: 'a wooden bench sits on top of a grass hill'. Reverse all words of length '2' in the given sentence.
[EX A]: a wooden bench sits no top fo a grass hill

[EX Q]: Sentence: 'a red and white passenger train going down a track'. Reverse all words of length '3' in the given sentence.
[EX A]:
a der dna white passenger train going down a track