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 couple of men on a court holding tennis rackets'. Reverse all words of length '2' in the given sentence.

SOLUTION: a couple fo men no a court holding tennis rackets

PROBLEM: Sentence: 'a couple of toothbrushes that are on a towel'. Reverse all words of length '6' in the given sentence.

SOLUTION: a elpuoc of toothbrushes that are on a towel

PROBLEM: Sentence: 'a train going over a bridge with water underneath it'. Reverse all words of length '2' in the given sentence.

SOLUTION:
a train going over a bridge with water underneath ti