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.
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Question: Sentence1: Joe was interested in Einstein's General Theory of Relativity. Sentence2: He watched several documentaries about Einstein. Sentence3: Then, he read a book on the Theory of Relativity. Sentence4: Joe learned quite a lot about Einstein's scientific achievements.

Answer: 5, He could not wait for his advanced physics class to start.

Question: Sentence1: When I first met Janice, she didn't know how to crack a walnut. Sentence2: I couldn't believe she had gotten this far in life without this skill. Sentence3: She accepted. Sentence4: Janice is now an expert walnut cracker.

Answer: 3, I offered to teach her many methods to crack nuts.

Question: Sentence1: Mark opened the back door of the restaurant and walked outside. Sentence2: It was the time of the day to take out the trash. Sentence3: Halfway to the dumpster, he saw many birds, feeding on the trash. Sentence4: He felt bad for the birds.

Answer:
4, He had gone hungry before so he knew all things must eat.