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 crosscountry biker with helmet and sports gears (green and black) is jumping in the air with his bike that has dirty tires. Sentence 2: A biker performs a stunt.
Two people talk in private.

Sentence 1: A professional dirt biker doing stunts while being videotaped Sentence 2: The dirt biker, who is a professional, is being videotaped doing stunts.
The professional dirt biker is being filmed sitting next to his bike.

Sentence 1: A chinese man wearing a traditional Chinese rice hat carries a balanced load across his shoulder with the use of a long stick. Sentence 2: chinese man carries some material

A Chinese man is carrying a Sherman tank on his back.