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: Carl joined the military right after high school. Sentence2: He signed a short contract that put him on the front lines. Sentence3: His best friend was killed in front of him. Sentence4: Carl had to go to therapy for post-traumatic stress disorder.
Example Output: 4, Happiness became a foreign concept to Carl.

Example Input: Sentence1: Ethan loved to make Youtube videos. Sentence2: However, he was too embarrassed to upload any videos. Sentence3: One day he gained the courage to upload one. Sentence4: Soon he had one hundred views!
Example Output: 5, Now, Ethan wanted to make and upload even more Youtube videos.

Example Input: Sentence1: When Emily was young she got to go to her first concert. Sentence2: Emily was very excited to see her favorite artist on the stage. Sentence3: The concert ticket was a gift for Emily for her birthday. Sentence4: This was the best birthday gift Emily had ever had.
Example Output:
2, She was nervous because of all of the people at the concert.