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 skinny guy is eating a sandwich while using the computer. Sentence 2: The guy is skinny
The man is very fat

Sentence 1: A man with a braided bandanna stands behind a drum set. Sentence 2: A man is standing behind a musical instrument.
A person is playing the flute.

Sentence 1: Two people are in a river, one is a standing man and the other appears to be a child lying on his stomach with his chest and head above the water. Sentence 2: Two people are in water

The man sits while the child stands in the river.