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 white bear stuff toy sitting next to a mini chair and book'. Reverse all words of length '1' in the given sentence.

SOLUTION: a white bear stuff toy sitting next to a mini chair and book

PROBLEM: Sentence: 'a large elephant standing in the wild'. Reverse all words of length '5' in the given sentence.

SOLUTION: a egral elephant standing in the wild

PROBLEM: Sentence: 'a train on a track with a person with suitcase next to it'. Reverse all words of length '1' in the given sentence.

SOLUTION:
a train on a track with a person with suitcase next to it