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: Two basketball players are competing for the ball during a game. Sentence 2: The two basketball players are competing during a championship game.
The basketball players are going against each other.

Sentence 1: A white and black dog runs on the grass. Sentence 2: The dog is a dalmation.
A dog is running outside.

Sentence 1: A London ambulance motorcycle. Sentence 2: A motorcycle ambulance crashed on the way to a call.

Motorcycles can be used as ambulances, too.