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 who is holding a blue ribbon is standing with one leg on the ground and the other leg in a vertical manner above her waist while most of the rest of her body is in a horizontal position. Sentence 2: A woman is practicing her yoga positions.

SOLUTION: A woman holding a blue ribbon is standing in a yoga pose, with one leg vertical and above her waist.

PROBLEM: Sentence 1: A small boy grins in a crowd full of people posing with their eyes closed in a sleeping position. Sentence 2: A blonde person grinning

SOLUTION: A small boy is grinning in a crowd.

PROBLEM: Sentence 1: A young girl and an older man are checking out at the food store. Sentence 2: A young girl is behind an old man in a checkout line.

SOLUTION:
There are people in a food store buying items.