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.

Input: Consider Input: Sentence1: We went snow skiing for my wife's birthday. Sentence2: In the lift line, we started talking to another couple. Sentence3: The four of us had drinks in the lodge that night. Sentence4: We had our first swingers experience that night.

Output: 3, We found out that they were celebrating the wife's birthday.

Input: Consider Input: Sentence1: My friend Sharon was nervous yesterday. Sentence2: She found out her company wanted her to retire. Sentence3: Although she has a good pension, she was still nervous. Sentence4: Sharon is now looking forward to a new chapter in her life.

Output: 4, I helped her rewrite her resume, preparing for a job search.

Input: Consider Input: Sentence1: Greg was playing ball by himself. Sentence2: He was bored. Sentence3: His friends came over. Sentence4: They played ball for the rest of the afternoon.
Output: 3, He wanted his friends.