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.

Sentence 1: A white dog with a black collar runs in the snow. Sentence 2: A dog is playing in a snow bank.
There is a dog running outside.

Sentence 1: Man in a white shirt jumping toward a brick wall. Sentence 2: A man jumps toward a wall to catch the ball
A man jumping toward a wall

Sentence 1: Two girls have a snow fight near a forest. Sentence 2: Siblings are having a snowball fight.

Children are having a snow fight.