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 woman in a white shirt plays a black guitar. Sentence 2: The woman is performing a musical piece.
The woman is practicing on a set of drums.

Sentence 1: Two brightly colored chickens stand outside of a pub. Sentence 2: Chickens are outside a bar.
One chicken stands outside a pub.

Sentence 1: Two men skateboarding in the forest. Sentence 2: Two men are outdoors.

Two girls are in a treehouse.