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.

Input: Consider Input: Sentence 1: A smiling construction worker with a white helmet. Sentence 2: He has been hit on the head before

Output: His head is protected

Input: Consider Input: Sentence 1: a man wearing a black jacket stands, holding an open book in front of a chalkboard and globe. Sentence 2: A tall man.

Output: The street vendor was selling bananas.

Input: Consider Input: Sentence 1: A man in a green sheet is in midair on a green-wheeled skateboard at a skateboard park. Sentence 2: A man is doing a skateboarding trick outside.
Output: A man in green is skateboarding.