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.

Sentence: 'a black and white image of a wall with a stop sign on it'. Reverse all words of length '5' in the given sentence.
a kcalb and etihw egami of a wall with a stop sign on it

Sentence: 'an image of a group of people sitting in the snow'. Reverse all words of length '6' in the given sentence.
an image of a group of elpoep sitting in the snow

Sentence: 'a man and a woman pose for a picture with whine glasses'. Reverse all words of length '4' in the given sentence.

a man and a woman esop for a picture htiw whine glasses