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 young boy in green pajamas playing with a toy at Christmas. Sentence 2: Little Mikey was wearing his green pajamas and playing with something that he got for Christmas.

SOLUTION: A little boy was playing with his legos by the Christmas tree.

PROBLEM: Sentence 1: The white dog has a blue shirt on and is behind a black dog with a rellow shirt on. Sentence 2: The white dog is chasing the black dog.

SOLUTION: Two dogs are wearing shirts.

PROBLEM: Sentence 1: A toddler is putting an ornament on a Christmas tree. Sentence 2: A child is finishing putting the ornaments he knocked off back on the tree.

SOLUTION:
A child is decorating a tree.