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: 'the city bus has a feature film ad on the side of it'. Reverse all words of length '4' in the given sentence.

SOLUTION: the ytic bus has a feature mlif ad on the edis of it

PROBLEM: Sentence: 'the dog looks up at the cat sitting on a stone'. Reverse all words of length '1' in the given sentence.

SOLUTION: the dog looks up at the cat sitting on a stone

PROBLEM: Sentence: 'two women stand together in front of a christmas tree'. Reverse all words of length '3' in the given sentence.

SOLUTION:
owt women stand together in front of a christmas tree