Instructions: In this task, you're given four sentences of a story written in natural language in which one part is missing. Your job is to predict the position and missing part of the story and return in the following format: position, missing part. The missing part is a sentence that completes the story, and the position is the number of the missing sentence in the new story.
Input: Sentence1: Gary wanted to get Lisa's attention. Sentence2: One day he decides to write Lisa a Poem. Sentence3: Gary gives Lisa a really big smile and hands her the poem. Sentence4: Lisa confesses she also has a crush on Gary.
Output:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
3, The next day at school, Gary sees Lisa in the hallway.