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: Man with a camouflage hat is throwing knives at a target. Sentence 2: an army colonel is throwing knives.
a man is throwing knives

Sentence 1: A man on a steep incline wearing a white shirt is working on a roof, with lots of debris all around. Sentence 2: A man is cleaning all the trash off a roof.
The man is doing work.

Sentence 1: a man singing while a woman plays guitar. Sentence 2: The two are in a platinum selling band.

The two are musicians.