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 man is standing on a sidewalk with his bike'. Reverse all words of length '3' in the given sentence.
answer:
a nam is standing on a sidewalk with sih bike


question:
Sentence: 'a person wearing a black jacket is standing next to a horse'. Reverse all words of length '8' in the given sentence.
answer:
a person wearing a black jacket is gnidnats next to a horse


question:
Sentence: 'a woman is standing in the kitchen with an eatin bar'. Reverse all words of length '7' in the given sentence.
answer:

a woman is standing in the nehctik with an eatin bar