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: Sara learned that she was expecting a child. Sentence2: She made it through the nine months of pregnancy. Sentence3: One day her water broke and she was taken to the hospital. Sentence4: Sara was in labor for 4 hours.
Example Output: 5, Sara had a baby boy.

Example Input: Sentence1: Bob went to the doctor. Sentence2: Bob realized that he had to get in shape. Sentence3: He joined a gym and started to watch what he ate. Sentence4: Bob got in shape.
Example Output: 2, The doctor told him that he was overweight.

Example Input: Sentence1: I drove to Chicago. Sentence2: I could not believe I was seeing a Beatle. Sentence3: I was 30 rows from the front of the stage. Sentence4: I cheered when the Beatle came under the spotlight.
Example Output:
1, I got my concert tickets.