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.

Example Input: Sentence 1: A young boy in green pajamas playing with a toy at Christmas. Sentence 2: Little Mikey was wearing his green pajamas and playing with something that he got for Christmas.
Example Output: A little boy was playing with his legos by the Christmas tree.

Example Input: Sentence 1: Man in a one shirt popping wheelies in the air on a red bicycle in a path lined by grass. Sentence 2: A man is riding a bike in a trick competition.
Example Output: A man is riding a bike.

Example Input: Sentence 1: A busy plaza with several people having conversations. Sentence 2: A plaza has a lot of people shopping.
Example Output:
A plaza is full of people talking.