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: Three males wearing a yellow vest with silver stripes and jeans; one is digging with an excavator, and two are using shovels. Sentence 2: Someone is using an orange excavator.
Someone is wearing a vest.

Sentence 1: A smiling woman stands in front of a body of water with water birds. Sentence 2: a woman loves the birds chirping
The woman is standing outside.

Sentence 1: A guy in gray is walking across the street at night. Sentence 2: A man is crossing the street at crosswalk at night.

A man is walking outside at night.