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 man holding a device in both of his hand'. Reverse all words of length '7' in the given sentence.
Example Output: a man gnidloh a device in both of his hand

Example Input: Sentence: 'woman holding an umbrella and a small cat'. Reverse all words of length '7' in the given sentence.
Example Output: woman gnidloh an umbrella and a small cat

Example Input: Sentence: 'a man standing in the forest holding an owl'. Reverse all words of length '2' in the given sentence.
Example Output:
a man standing ni the forest holding na owl