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: 'a vintage photo of a man riding an old motorcycle'. Reverse all words of length '7' in the given sentence.
a egatniv photo of a man riding an old motorcycle

Sentence: 'a skier moves down a slope with trees off in the distance'. Reverse all words of length '2' in the given sentence.

a skier moves down a slope with trees off ni the distance