TASK DEFINITION: In this task, you're given a pair of sentences, sentence 1 and sentence 2, that neither agree with nor contradict each other. Your job is to alter sentence 2 so that the pair clearly 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 in green boots and a green bag talking on her cellphone as she walks. Sentence 2: A women is walking, while talking to her husband.

SOLUTION: A person is on the phone.

PROBLEM: Sentence 1: A man dressed in cowboy attire is riding a horse. Sentence 2: the horse is white

SOLUTION: a man riding a horse

PROBLEM: Sentence 1: Two children playing musical instruments. Sentence 2: Two children play in their school band.

SOLUTION:
Two children play instruments.