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 leans down to take a bite from his sandwich'. Reverse all words of length '5' in the given sentence.
answer:
a man snael down to take a bite from his sandwich


question:
Sentence: 'a man and woman standing with luggage in a waiting area'. Reverse all words of length '7' in the given sentence.
answer:
a man and woman standing with egaggul in a gnitiaw area


question:
Sentence: 'snowboarder impaled on a tree during dusk with fire'. Reverse all words of length '6' in the given sentence.
answer:

snowboarder impaled on a tree gnirud dusk with fire