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: Exhausted looking men and women are finishing up a marathon. Sentence 2: Exhausted looking men and women are being chased by a killer
Exhausted looking men and women are running

Sentence 1: A male wearing yellow pants catches air as he snowboards down an empty mountain. Sentence 2: A snowboarder shows off a trick as he is filmed for a television commercial.
The man is snowboarding.

Sentence 1: A man is pushing a bike with a large basket filled with drinks. Sentence 2: The man pushing the bike owns the bike.

A man is pushing a bike.