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: Javier always noticed the kids playing handball near his house. Sentence2: He wanted to join them but he was intimidated. Sentence3: One day he summoned the courage to play handball with them. Sentence4: Javier began playing handball with them regularly.
Example Output: 4, He found that they were actually very nice.

Example Input: Sentence1: He decided to swat it. Sentence2: He tried for half an hour but it kept evading him. Sentence3: Eventually the fly flew out on its own. Sentence4: Don closed the door it flew out of.
Example Output: 1, Don noticed a fly go into the living room.

Example Input: Sentence1: Kelly worked at Cedar Point for the summer. Sentence2: One day, while she was working, she found $20 on the ground! Sentence3: She ran to the security booth and gave them the $20. Sentence4: Kelly used the money treat all her friends to ice cream.
Example Output:
4, After a week, nobody had claimed the money.