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.

Example Input: Sentence: 'a backyard with a chair covered in snow'. Reverse all words of length '4' in the given sentence.
Example Output: a backyard htiw a chair covered in wons

Example Input: Sentence: 'a room with two queen sized beds and a television'. Reverse all words of length '4' in the given sentence.
Example Output: a moor htiw two queen sized sdeb and a television

Example Input: Sentence: 'a couple walking in the rain using and umbrella'. Reverse all words of length '6' in the given sentence.
Example Output:
a elpuoc walking in the rain using and umbrella