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: A person walking with a black umbrella walking in front of an iron fence. Sentence 2: Someone with an umbrella passing by a fence.
A group of tourists with umbrella's peering through the picket fence.

Sentence 1: A woman directing traffic. Sentence 2: A person directing traffic.
A woman is playing with a chicken on a farm.

Sentence 1: A man in a blue jacket walks alone by an office building. Sentence 2: A man is by himself.

There are no people walking.