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: 'there are two men sitting on a park bench'. Reverse all words of length '5' in the given sentence.
Example Output: ereht are two men sitting on a park hcneb

Example Input: Sentence: 'a person on a surfboard riding a wave in the water'. Reverse all words of length '5' in the given sentence.
Example Output: a person on a surfboard riding a wave in the retaw

Example Input: Sentence: 'a living room with blue walls and furniture'. Reverse all words of length '4' in the given sentence.
Example Output:
a living moor htiw eulb walls and furniture