Definition: 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.
Input: Sentence: 'motorcyclists riding down the street with partition and cars on the other side'. Reverse all words of length '5' in the given sentence.

motorcyclists riding down the street with partition and cars on the rehto side