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: Gina's family was visiting her grandma in Illinois. Sentence2: It was the first day, and Gina was the last to wake up. Sentence3: She went to the kitchen to have breakfast. Sentence4: Gina was sad and cried.
Example Output: 4, The family had already eaten most of the food.

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

Example Input: Sentence1: He decided to take the long trip to Idaho to see her. Sentence2: Larry packed his bags and drove to Idaho. Sentence3: His Aunt was very happy to see him. Sentence4: Larry started making regular trips to see his Aunt.
Example Output:
1, Larry regretted that he hadn't seen his aunt in months.