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: The skateboarder wearing a black t-shirt and black pants is in front of the red brick building. Sentence 2: The skateboarder is in front a building.
The skateboarder is inside the building knocking on the door.

Sentence 1: Two men and one woman dressed in suits and ties holding musical gear. Sentence 2: Some people who were dressed up are holding something.
10 people are playing tennis

Sentence 1: A man is riding a red motorcycle with a small child sitting in front of him. Sentence 2: A man rides a motorcyle with a child.

A woman drives a green moped.