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: Four bicyclists wearing helmets are racing along a city street while onlookers observe. Sentence 2: For bicyclists are racing in the Tour de France.

SOLUTION: Four people are racing bicycles.

PROBLEM: Sentence 1: A young man using a notepad and pen to diagram an image. Sentence 2: A young man using a red pen with a notepad.

SOLUTION: A young man using a pen and notepad.

PROBLEM: Sentence 1: Two dogs are facing each other. Sentence 2: There are two puppies facing each other.

SOLUTION:
There are two dogs facing each other.