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: During the election party not all the guest attending are happy. Sentence 2: Some of the guests at the party are unhappy.
A boy plays with barbie dolls in his bedroom

Sentence 1: A young man sits on a chair with one shoe off. Sentence 2: Someone has taken a shoe off.
Everyone is wearing two shoes.

Sentence 1: A man and boy are eating food outdoors while sitting down next to a shopping cart. Sentence 2: Two people are outside.
A father and daughter ride bikes in the park.