instruction:
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.
question:
Sentence: 'a young man is sitting on the side of a bus eating a hot dog'. Reverse all words of length '3' in the given sentence.
answer:
a young nam is sitting on eht side of a sub eating a toh god


question:
Sentence: 'a double decker tour bus drives down the road with other buses and cars'. Reverse all words of length '5' in the given sentence.
answer:
a double decker tour bus drives down the road with rehto sesub and cars


question:
Sentence: 'a street sign is shown against the blue sky'. Reverse all words of length '3' in the given sentence.
answer:

a street sign is shown against eht blue yks