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 man in a blue jacket smiles back at the camera, positioned in front of a lake or large river on a clear sunny day. Sentence 2: A man is posing for a picture outside.
Example Output: A man is snowboarding down a huge mountain.

Example Input: Sentence 1: A man stretching in an urban environment. Sentence 2: Man stretching in an urban environment
Example Output: Man taking a nap before work

Example Input: Sentence 1: A child brushes a play crocodiles teeth. Sentence 2: The child is playing with a toy.
Example Output:
The child is grooming a dangerous leopard's fur.