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 man in a red shirt holds a beer can and hammers while a man in a white shirt looks on. Sentence 2: the man has a beer can
the man does not have a beer can

Sentence 1: A leader at the front of a group is holding her hands in the air just like what all of the people facing her are doing. Sentence 2: A human is in front of a lot of other humans with her hands raise high.
Three elderly people sit quietly on a park bench, feeding the ducks.

Sentence 1: A man riding a huge Hereford bucking bull in a rodeo while people in the background are watching. Sentence 2: A man is riding a bull to entertain a crowd of people
A man is riding a donkey in front of a crowd.