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: Jason decides that he wants to learn Hindi before the wedding. Sentence2: He hires a tutor and practices speaking Hindi every day. Sentence3: When the wedding day arrives, Jason is fluent in Hindi! Sentence4: Everyone was impressed that Jason had become bilingual.

Ex Output:
1, Jason's best friend is getting married in India next year.

Ex Input:
Sentence1: He went to some art galleries downtown to get inspiration. Sentence2: Once he had an idea. Sentence3: He went online and bought some materials. Sentence4: Austin painted several pictures similar to what he had seen.

Ex Output:
1, Austin needed artwork for his apartment.

Ex Input:
Sentence1: Her friends aren't sure what her secret is. Sentence2: Last week they decided to ask her. Sentence3: She said she was working out and eating better. Sentence4: Anna's friends were surprised by her simple methods.

Ex Output:
1, Anna has lost twenty pound in three months.