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: Joanie got ready to blow dry her hair for a date. Sentence2: Then, Joanie heard a familiar sound coming from outside. Sentence3: She saw her brother using the blow dryer. Sentence4: Joanie ran outside to confront her brother.
Example Output: 2, She was upset to find her blow dryer missing.

Example Input: Sentence1: Jeff was walking home to only see a tornado at a distance. Sentence2: Jeff knew he was in danger so he went to a nearby house. Sentence3: The homeowner let Jeff inside. Sentence4: They huddled in the bathroom as the tornado raged overhead.
Example Output: 3, He rang the doorbell and asked if he can stay until tornado dies off.

Example Input: Sentence1: Jason loves using a Macintosh at home but his office uses only PCs. Sentence2: He has trouble becoming familiar with the PC operating system at work. Sentence3: Jason buys a PC at home to become more familiar with it. Sentence4: Soon he has become an expert in using a PC
Example Output:
5, Jason got a raise at work for being so good at working a PC.