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: Gary always brought his lunch to work. Sentence2: Today Gary couldn't find his lunchbox. Sentence3: He figured he would just buy something out of the machine at work. Sentence4: Gary was very upset and went hungry.

Ex Output:
4, When Gary took his lunch, he found out the machine was broken.

Ex Input:
Sentence1: Tim bought a new lamp today. Sentence2: He went home to set it up. Sentence3: He assembled the lamp within five minutes. Sentence4: Tim was pleased the lamp was so easy to set up.

Ex Output:
3, Tim opened the box and followed the instructions.

Ex Input:
Sentence1: Ed and his twin Ethan were looking at women online. Sentence2: Then they saw a profile for two twin ladies. Sentence3: They called Sami and Sara and arranged a date. Sentence4: Years later both couples got married.

Ex Output:
4, On their date, all four had a wonderful time.