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 people in a dog carrying items walking along the beach'. Reverse all words of length '7' in the given sentence.

SOLUTION: three people in a dog carrying items gniklaw along the beach

PROBLEM: Sentence: 'three brown horses standing in a green field'. Reverse all words of length '5' in the given sentence.

SOLUTION: eerht nworb horses standing in a neerg dleif

PROBLEM: Sentence: 'a dry grass field with lots of trees surrounded by  mountains'. Reverse all words of length '1' in the given sentence.

SOLUTION:
a dry grass field with lots of trees surrounded by mountains

