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: Several people at an outdoor picnic. Sentence 2: Humans in a group.

SOLUTION: A single man eats alone.

PROBLEM: Sentence 1: A man in ice climbing gear holds a rope. Sentence 2: A man is outside holding a rope.

SOLUTION: A woman and a shark go to the movies.

PROBLEM: Sentence 1: The bike rider is wearing a silver helmet and red shirt. Sentence 2: A biker wearing red.

SOLUTION:
A biker without a helmet