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.

Sentence 1: A closeup of a little girl laughing. Sentence 2: Portrait of a happy young girl.
A man buying balloons from a street vendor.

Sentence 1: A woman in a purple shirt running a marathon getting water splashed on her. Sentence 2: A woman in a shirt running a marathon getting water splashed on her.
A man in a purple shirt running a marathon getting water splashed on her.

Sentence 1: A dark-haired young boy and a little blond girl are dressed in karate outfits with yellow belts. Sentence 2: The boy knows karate.

The yellow belt means nothing.