In this task, you're given a pair of sentences, sentence 1 and sentence 2, that contradict each other. Your job is to alter sentence 2 so that the pair agree with 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.
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Question: Sentence 1: A man in a white shirt is standing next to a cart with a green tarp and a filled sack on top. Sentence 2: A man is canoeing down the river.

Answer: A person is next to some objects.

Question: Sentence 1: There is a person standing on top of a stairway outside of a Costco store. Sentence 2: A man is waiting to check out inside the Costco.

Answer: A person is outside

Question: Sentence 1: Girl about to kick a piece of wood in half while karate instructor holds it Sentence 2: A girl is about to throw a can down the street.

Answer:
Two people are practicing martial arts.