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 heard of animals in a field approaching the water'. Reverse all words of length '11' in the given sentence.

SOLUTION: a heard of animals in a field gnihcaorppa the water

PROBLEM: Sentence: 'an umbrella sitting on top of a hill next to a body of water'. Reverse all words of length '4' in the given sentence.

SOLUTION: an umbrella sitting on top of a llih txen to a ydob of water

PROBLEM: Sentence: 'a man with his hands pressed to his face and mouth open'. Reverse all words of length '7' in the given sentence.

SOLUTION:
a man with his hands desserp to his face and mouth open