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 water bottle sitting on top of a counter'. Reverse all words of length '6' in the given sentence.

SOLUTION: a water elttob sitting on top of a counter

PROBLEM: Sentence: 'an orange and white bus driving down a city street'. Reverse all words of length '1' in the given sentence.

SOLUTION: an orange and white bus driving down a city street

PROBLEM: Sentence: 'a man sitting on a couch holding food in his hands'. Reverse all words of length '7' in the given sentence.

SOLUTION:
a man gnittis on a couch gnidloh food in his hands