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.

[EX Q]: Sentence 1: The skateboarder wearing a black t-shirt and black pants is in front of the red brick building. Sentence 2: The skateboarder is in front a building.
[EX A]: The skateboarder is inside the building knocking on the door.

[EX Q]: Sentence 1: A rollerblader skates down a ramp with his arms in the air. Sentence 2: A rollerblader has his arms in the air.
[EX A]: The rollerblader is a girl.

[EX Q]: Sentence 1: A boy and girl play in a city fountain. Sentence 2: two people playing in the water
[EX A]:
two people running a marathon