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.

Example Input: Sentence 1: In front of a decorated Christmas tree, four adults and two children sit or stand amongst gifts, and one of the adults gives a child a drink of water. Sentence 2: It is the Christmas season.
Example Output: The room the adults and children are in is bare of any decoration.

Example Input: Sentence 1: a black dog jumping over a yellow pole in an obstacle course Sentence 2: A dog jumping over an object.
Example Output: A cat is drinking milk.

Example Input: Sentence 1: A professor explaining a University level lecture. Sentence 2: A professor in class.
Example Output:
the woman is eating