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: 'there are many animals standing on the top of this mountain'. Reverse all words of length '4' in the given sentence.

SOLUTION: there are ynam animals standing on the top of siht mountain

PROBLEM: Sentence: 'the couple are smiling at each other as they sit on a bench'. Reverse all words of length '4' in the given sentence.

SOLUTION: the couple are smiling at hcae other as yeht sit on a bench

PROBLEM: Sentence: 'there are a bunch of umbrellas that are near some rocks and a body of water'. Reverse all words of length '3' in the given sentence.

SOLUTION:
there era a bunch of umbrellas that era near some rocks dna a body of water