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: 'a skateboarder riding down a rail during the day'. Reverse all words of length '3' in the given sentence.

SOLUTION: a skateboarder riding down a rail during eht yad

PROBLEM: Sentence: 'man extending arm with three bananas crosswise on it'. Reverse all words of length '4' in the given sentence.

SOLUTION: man extending arm htiw three bananas crosswise on it

PROBLEM: Sentence: 'a stop sign with a wooden foot bridge in the background'. Reverse all words of length '1' in the given sentence.

SOLUTION:
a stop sign with a wooden foot bridge in the background