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.

Example Input: Sentence1: Mario got up out of bed. Sentence2: Today was his wedding day and he already felt the butterflies. Sentence3: He got dressed and went to the church. Sentence4: It was the best day of his life.
Example Output: 3, He shaved and showered happily.

Example Input: Sentence1: The people who lived there did not know. Sentence2: They left for work one day, and the gas filled up the house. Sentence3: A small spark caused the house to explode. Sentence4: When they returned, they saw that their house was gone.
Example Output: 1, There was a gas leak in a house down the street.

Example Input: Sentence1: He enjoyed talking to her and spending time with her. Sentence2: John asked Jessica to go out with him on a date. Sentence3: She said yes, and they had a good time. Sentence4: John was glad he asked her on a date.
Example Output:
1, One day, John met a cute girl named Jessica.