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 bus with lots of big tires sitting parked on a street'. Reverse all words of length '6' in the given sentence.
Example Output: a bus with lots of big tires sitting dekrap on a teerts

Example Input: Sentence: 'a vase of flowers sitting near a candle on a sink'. Reverse all words of length '6' in the given sentence.
Example Output: a vase of flowers sitting near a eldnac on a sink

Example Input: Sentence: 'the brown bear is standing on a rock in a stream'. Reverse all words of length '4' in the given sentence.
Example Output:
the brown raeb is standing on a kcor in a stream