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: Children are competing in a potato sack race at an outdoor social gathering. Sentence 2: Children participate in a potato sack race.
Children play baseball.

Sentence 1: A surfer blazes on a roaring wave. Sentence 2: the surfer rides the waves
the cat eats his tail

Sentence 1: There is big hill of dirt behind signs that say "Ramp Closed." Sentence 2: Ramp Closed signs are posted in front of a hill of dirt.

Traffic on a big hill of dirt is back up both ways