instruction:
In this task, you're given a pair of sentences, sentence 1 and sentence 2, that agree with each other. Your job is to alter sentence 2 so that the pair 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: Man riding a surfboard on a wave. Sentence 2: There is a person in the water
answer:
The surfer is sunbathing on the beach


question:
Sentence 1: A man in a black shirt and jeans is barbecuing outdoors. Sentence 2: A man is outside cooking on the grill.
answer:
A man sits on the couch and reads.


question:
Sentence 1: Four runners are competing in a race, on an indoor course, decorated with many colorful, international flags. Sentence 2: Four runners compete on an indoor course.
answer:

Four men plot to kill the president.