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: Alice was getting married in a few weeks. Sentence2: One night, her mother called and she forgot to call her back. Sentence3: She threatened not to come to the wedding. Sentence4: Alice called her mother and apologized profusely.

Ex Output:
3, Her mother left an angry message on her phone.

Ex Input:
Sentence1: I met Nancy for the first time today. Sentence2: Despite walking for one moment, she constantly messaged me. Sentence3: I decided to call her and ask to stop calling me. Sentence4: I never heard from her again.

Ex Output:
2, Before she left, we exchanged phone numbers.

Ex Input:
Sentence1: She cut out junk food and fatty foods. Sentence2: But she still struggled to lose weight. Sentence3: Then she began running every day on her treadmill. Sentence4: She started losing weight.

Ex Output:
1, Lia was trying to lose weight.