Teacher: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.
Teacher: Now, understand the problem? Solve this instance: Sentence1: When I was a kid I really wanted to play checkers. Sentence2: I sat down with my grandpa and he taught me. Sentence3: As I got older, I continued to play checkers with him. Sentence4: I have very fond memories of checkers.
Student:
3, At first, he was just teaching me but it became a special thing.