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: A brown dogs licks its black nose. Sentence 2: The brown dog has a black nose.
[EX A]: The yellow dog is licking it's nose.

[EX Q]: Sentence 1: A woman walking a bike down a busy sidewalk. Sentence 2: A person walking a bike down a busy sidewalk.
[EX A]: A man walking a bike down a busy sidewalk.

[EX Q]: Sentence 1: A mounted policeman passes a biker. Sentence 2: There is a policeman on a horse and a biker.
[EX A]:
A cop steps out of a car to talk to a biker.