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 couple of giraffes standing in front of a metal fence'. Reverse all words of length '8' in the given sentence.

SOLUTION: a couple of seffarig gnidnats in front of a metal fence

PROBLEM: Sentence: 'a person on a parachute landing on the water'. Reverse all words of length '2' in the given sentence.

SOLUTION: a person no a parachute landing no the water

PROBLEM: Sentence: 'several elephants walking in tall grass near one another'. Reverse all words of length '3' in the given sentence.

SOLUTION:
several elephants walking in tall grass near eno another