instruction:
In this task, you're given a pair of sentences, sentence 1 and sentence 2, that neither agree with nor contradict each other. Your job is to alter sentence 2 so that the pair clearly contradict each other. Generated sentences must be short, with less than 15 words. New information can be introduced. Avoid using pronouns to confuse the subject of the sentence.
question:
Sentence 1: A young guy is a red shirt performing skateboard trick. Sentence 2: A man does a kickflip on his skateboard.
answer:
A man on a skateboard.


question:
Sentence 1: Cobblestone street and line of storefronts Sentence 2: There are people walking down the street.
answer:
There are stores along a street.


question:
Sentence 1: The dog by the fence is running on the grass. Sentence 2: The dog is running on the grass chasing a frisbee.
answer:

The dog is running on the grass.