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 woman in a white shirt tries on a hat in front of a mirror. Sentence 2: The woman is pretty.
The woman is trying on clothes.

Sentence 1: A woman with a colorful scarf is walking outside. Sentence 2: The woman is exercising.
The woman is outdoors.

Sentence 1: Three young ballerinas performing on a stage. Sentence 2: The girls practice their dance at the rehersal.

The dances move in unison.