instruction:
In this task, you're given a pair of sentences, sentence 1 and sentence 2, that neither agree with nor contradict each other. Your job is to alter sentence 2 so that the pair clearly 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: A stoplight is yellow next to a pedestrian crossing sign. Sentence 2: Someone is waiting to cross the street
answer:
The stoplight will turn red shortly


question:
Sentence 1: A girl rides by on a bicycle while a boy watches her. Sentence 2: There is a girl riding a bike outdoors racing a boy
answer:
There is a girl riding a bike


question:
Sentence 1: An old man stands in front of a rundown building. Sentence 2: An man stands in front of a rundown building in his hometown.
answer:

An man stands in front of a building