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.

Ex Input:
Sentence1: The high school student went to the dentist. Sentence2: She was not happy. Sentence3: She got braces and was in a lot of pain. Sentence4: But it was worth it when she saw her straightened teeth.

Ex Output:
2, She was told she needed braces again.

Ex Input:
Sentence1: Tim bought a new lamp today. Sentence2: He went home to set it up. Sentence3: Tim opened the box and followed the instructions. Sentence4: He assembled the lamp within five minutes.

Ex Output:
5, Tim was pleased the lamp was so easy to set up.

Ex Input:
Sentence1: Josh liked watching anime TV shows. Sentence2: When he criticized one of them, its fans got angry with him. Sentence3: Josh didn't understand why they couldn't accept criticism. Sentence4: Josh then decided to watch anime by himself.

Ex Output:
4, Josh kept his opinions to himself.