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: Cyclists are cycling through laps. Sentence 2: Olympic hopefuls train for their next competition.
People ride bikes outside.

Sentence 1: Man works on lowering a train on tracks. Sentence 2: The man works on a life and death situation.
A worker at the trainyard.

Sentence 1: A person in a black and white shirt on a bicycle. Sentence 2: A mime is on his bike.

A person is wearing a shirt.