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 person siting on the ground and decorating a parking meter'. Reverse all words of length '5' in the given sentence.

SOLUTION: a person siting on the ground and decorating a parking retem

PROBLEM: Sentence: 'a couple of elephants that are in some water'. Reverse all words of length '6' in the given sentence.

SOLUTION: a elpuoc of elephants that are in some water

PROBLEM: Sentence: 'this is an image of a gondola in the rain with umbrellas'. Reverse all words of length '4' in the given sentence.

SOLUTION:
siht is an image of a gondola in the niar htiw umbrellas