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.

Ex Input:
Sentence 1: A father and his son bonding. Sentence 2: A father and his son are playing catch.

Ex Output:
A man has a son.


Ex Input:
Sentence 1: Four people wait in a stone tiled courtyard. Sentence 2: Four people are waiting for a tour guide.

Ex Output:
Four people are outside.


Ex Input:
Sentence 1: A group of roller derby athletes dressed in black and skating the rink. Sentence 2: a group of athletes competing

Ex Output:

a group of athleste in a rink