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: 'decorative street signs on a post in front of trees'. Reverse all words of length '10' in the given sentence.

SOLUTION: evitaroced street signs on a post in front of trees

PROBLEM: Sentence: 'a smiling young woman standing beneath a city street sign'. Reverse all words of length '4' in the given sentence.

SOLUTION:
a smiling young woman standing beneath a ytic street ngis