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: 'three planes being serviced at the airport on a sunny day'. Reverse all words of length '2' in the given sentence.

SOLUTION: three planes being serviced ta the airport no a sunny day

PROBLEM: Sentence: 'a couple of women sitting on a bench with a dog'. Reverse all words of length '4' in the given sentence.

SOLUTION: a couple of women sitting on a bench htiw a dog

PROBLEM: Sentence: 'a black bear grazing in a heavily vegetated area'. Reverse all words of length '5' in the given sentence.

SOLUTION:
a kcalb bear grazing in a heavily vegetated area