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: 'several bicycles and a bus parked outside a large building'. Reverse all words of length '7' in the given sentence.
Example Output: lareves bicycles and a bus parked edistuo a large building

Example Input: Sentence: 'three zebras are standing on a grassy field'. Reverse all words of length '1' in the given sentence.
Example Output: three zebras are standing on a grassy field

Example Input: Sentence: 'a person kneeling down next to a red and white fire hydrant on a sidewalk'. Reverse all words of length '5' in the given sentence.
Example Output:
a person kneeling down next to a red and etihw fire hydrant on a sidewalk