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 dog that is in a living room near a group of people'. Reverse all words of length '5' in the given sentence.
Example Output: a dog that is in a living room near a puorg of people

Example Input: Sentence: 'a dog is sleeping on a boat in the water'. Reverse all words of length '2' in the given sentence.
Example Output: a dog si sleeping no a boat ni the water

Example Input: Sentence: 'a double decker bus runs on a city street'. Reverse all words of length '1' in the given sentence.
Example Output:
a double decker bus runs on a city street