TASK 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.
PROBLEM: Sentence: 'many pairs of open scissors sit on top of metal poles'. Reverse all words of length '4' in the given sentence.

SOLUTION: ynam pairs of nepo scissors sit on top of metal poles

PROBLEM: 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.

SOLUTION: a kcalb and etihw egami of a wall with a stop sign on it

PROBLEM: Sentence: 'a large white polar bear walking near a building'. Reverse all words of length '4' in the given sentence.

SOLUTION:
a large white polar raeb walking raen a building