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: A man on a brown horse is preparing to lasso a bull, while another man on a white horse corrals the bull. Sentence 2: The men are veteran ranch hands.
Two men are trying to round bulls up.

Sentence 1: A boy is attempting to climb an iron fence. Sentence 2: A curious boy is trying to escape from the confines of his school's playground.
A boy is in this photograph.

Sentence 1: A number of boats of varying sizes are cruising in a semi-circle. Sentence 2: The boats have groups of people on them.

Some boats are cruising.