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: A mother looked at the face of her newborn baby boy. Sentence2: Her dream was to give him the childhood that she was not given. Sentence3: She sacrificed time and energy to accomplish her goal. Sentence4: The boy had a very happy childhood.
Example Output: 2, She dreamed of their future together.

Example Input: Sentence1: Ryan used to work for mall security. Sentence2: One day, he saw a raccoon in the mall. Sentence3: He stared at it for hours until it left. Sentence4: Ryan decided his job was rather dull.
Example Output: 2, He often worked the night shift.

Example Input: Sentence1: Young Reggie loved playing and watching american football. Sentence2: His favorite player was running back Jamal Lewis. Sentence3: He was at the Salt Lake Airport with his family and saw his hero. Sentence4: Jamal Lewis gave him personal advice and wished him the best.
Example Output:
4, He went up to him saying that he will also play professional football.