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: The cowboy kneels down to put the brown strap on his boot. Sentence 2:  The cowboy kneels down to put the brown strap on his metal boot.
 The cowboy kneels down.

Sentence 1: A guy with no shirt and no shoes, who is painting the floor. Sentence 2: A man is working.
A man is painting.

Sentence 1: A man wearing a creme jacket and white pants carrying a blue bag on his right shoulder walking up stone steps. Sentence 2: A man carrying a blue bag walks to his job.

A man carrying a blue bag is walking.