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: 'an image of a group of people sitting in the snow'. Reverse all words of length '6' in the given sentence.
answer:
an image of a group of elpoep sitting in the snow


question:
Sentence: 'a dog is catching a frisbee at a competition'. Reverse all words of length '11' in the given sentence.
answer:
a dog is catching a frisbee at a noititepmoc


question:
Sentence: 'a woman contemplating something with a coffee cup'. Reverse all words of length '9' in the given sentence.
answer:

a woman contemplating gnihtemos with a coffee cup