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.

Example Input: Sentence 1: A billboard for Comcast Digital Voice that references Madagascar 2. Sentence 2: A billboard with references to an animated film.
Example Output: A small old billboard with pealing paint displays an ad for Radio Shack.

Example Input: Sentence 1: Some young people are hanging out at night outside a building. Sentence 2: Some kids are outside.
Example Output: Some kids are staying at home tonight.

Example Input: Sentence 1: A rollerblader skates down a ramp with his arms in the air. Sentence 2: A rollerblader has his arms in the air.
Example Output:
The rollerblader is a girl.