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 bathroom with just a toilet and toilet paper'. Reverse all words of length '1' in the given sentence.

SOLUTION: a bathroom with just a toilet and toilet paper

PROBLEM: Sentence: 'a football game on a grassy playing field'. Reverse all words of length '2' in the given sentence.

SOLUTION: a football game no a grassy playing field

PROBLEM: Sentence: 'two elephants swimming across a river at sunset'. Reverse all words of length '3' in the given sentence.

SOLUTION:
owt elephants swimming across a river at sunset