Teacher: 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.
Teacher: Now, understand the problem? If you are still confused, see the following example:
Sentence 1: Jon saw his friend Tom coming out of the grocery store with a bag of fruit. Sentence 2: Tom had gone inside the store and now has fruit.
Solution: Tom had not been in the store.
Reason: The given sentence contradicts sentence 1 (i.e. they can not be correct at the same time.)

Now, solve this instance: Sentence 1: An amateur astronomer looks into the eyepiece of a large telescope set up in a field next to its carrying case, while another one overviews the telescope itself. Sentence 2: a person looks through the eyepiece of a large telescope set up in a field while another person looks at the telescope
Student:
a person stands in front of a telescope while another watches the stars