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: 'three people with backpacks on skies moving up a hill'. Reverse all words of length '9' in the given sentence.
answer:
three people with skcapkcab on skies moving up a hill


question:
Sentence: 'a man walking a brown horse down a race track'. Reverse all words of length '4' in the given sentence.
answer:
a man walking a brown horse nwod a ecar track


question:
Sentence: 'man in business suit standing in front of a wall'. Reverse all words of length '4' in the given sentence.
answer:

man in business tius standing in front of a llaw