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: People in beautiful blue water surfing a nice wave. Sentence 2: people trying to escape the shark in the water
people surfing the waves

Sentence 1: A crowd of people look through clothes and books that are laid out in a large atrium. Sentence 2: A crowd of people at a yard sale.
A crowd of people looking through items.

Sentence 1: A pit crew working on a race car. Sentence 2: They are changing tires.

People are working on a car.