TASK DEFINITION: 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.
PROBLEM: Sentence 1: Three guys, one playing the guitar, one playing the keyboard accordion and one playing the violin. Sentence 2: Three people are playing musical instruments.

SOLUTION: All three guys are playing guitars.

PROBLEM: Sentence 1: Two surfers catch the same huge wave in the ocean. Sentence 2: Two people are surfing the same wave.

SOLUTION: The people are on a boat.

PROBLEM: Sentence 1: A group of New Yorkers is protesting the war with signs asking to bring home the troops. Sentence 2: A group of New Yorkers is protesting the war asking to bring home the troops.

SOLUTION:
The man from Berkeley is joining the army.