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 young lady wearing blue jogging pants is enjoying a jog on a nice spring day. Sentence 2: The lady is jogging.

SOLUTION: The lady is shopping at a mall.

PROBLEM: Sentence 1: A guy is sitting by a tree watching a girl sing with a blue bucket in front of her. Sentence 2: 2 people are by a tree

SOLUTION: two dogs are singing by a tree

PROBLEM: Sentence 1: A crowd of people wearing blue LA baseball caps at a game and a lady with a yellow shirt is walking up the steps with a man behind her wearing a dark plaid shirt. Sentence 2: A group of people are wearing hats.

SOLUTION:
A crowd of people are wearing yellow LA baseball caps.