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: 'four pink roses in a water filled dish bowl'. Reverse all words of length '4' in the given sentence.
Example Output: ruof knip roses in a water filled hsid lwob

Example Input: Sentence: 'a baseball player standing on a field wearing a mitt'. Reverse all words of length '4' in the given sentence.
Example Output:
a baseball player standing on a field wearing a ttim