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.

[Q]: Sentence 1: Individuals are building a house. Sentence 2: People are building a house.
[A]: A construction crew is demolishing a house.

[Q]: Sentence 1: A young boy, dressed in a karate gee and wearing a yellow belt, stands ready to defend himself inside a gym. Sentence 2: A young, yellow Belt, Karate Student is practicing in a Gym.
[A]: the boy smokes a cigarette at home

[Q]: Sentence 1: A conductor of a train leans out of a window and looks to the right, while another man inside of the carriage looks towards some gauges. Sentence 2: There are two people on a train looking at different things.
[A]:
People watch a train go by.