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: A woman dressed in a white dress and holding a bouquet of pink roses, placing a rose stem on the lapel of a man dressed in a dark blue dinner jacket and white tie. Sentence 2: The woman had on a white dress.

SOLUTION: The woman had a red dress on.

PROBLEM: Sentence 1: A man in a black shirt and jeans is barbecuing outdoors. Sentence 2: A man is outside cooking on the grill.

SOLUTION: A man sits on the couch and reads.

PROBLEM: Sentence 1: There is a chocolate brown dog running in water. Sentence 2: The brown dog is running in water.

SOLUTION:
The dog is catching a frisbee.