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 person holding a yummy looking hot dog'. Reverse all words of length '7' in the given sentence.
Example Output: a person gnidloh a yummy gnikool hot dog

Example Input: Sentence: 'two doubledecker buses are parked at a bus stop next to some buildings with another doubledecker bus on the road going the other direction behind them'. Reverse all words of length '1' in the given sentence.
Example Output: two doubledecker buses are parked at a bus stop next to some buildings with another doubledecker bus on the road going the other direction behind them

Example Input: Sentence: 'a large bus is on the street near a stop sign'. Reverse all words of length '6' in the given sentence.
Example Output:
a large bus is on the teerts near a stop sign