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: 'an old fashioned setting of people playing tennis'. Reverse all words of length '6' in the given sentence.

SOLUTION: an old fashioned setting of elpoep playing sinnet

PROBLEM: Sentence: 'three people are sitting in the room playing video games'. Reverse all words of length '2' in the given sentence.

SOLUTION: three people are sitting ni the room playing video games

PROBLEM: Sentence: 'the banana bread is cooling on a rack'. Reverse all words of length '4' in the given sentence.

SOLUTION:
the banana bread is cooling on a kcar