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

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


Question: Sentence: 'a red double decker bus parked in front of a building'. Reverse all words of length '1' in the given sentence.

Answer: a red double decker bus parked in front of a building


Question: Sentence: 'person riding on the back of a horse on a gravel road'. Reverse all words of length '2' in the given sentence.

Answer:
person riding no the back fo a horse no a gravel road