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.

Sentence 1: A young man stands outdoors in front of electronic equipment with his arms folded while another man in the background wears headphones. Sentence 2: A man is near electronic equipment while another had on headphones.
Two women are dancing to old Pop music.

Sentence 1: Two women wearing sunglasses are standing by the side of the road and the one wearing a skirt is holding up a stop sign with the word eating taped to it. Sentence 2: There are multiple people present.
There is only one person present.

Sentence 1: A girl is holding a birthday cake. Sentence 2: A girl has a birthday cake.

A girl is doing jumping jacks.