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: Sentence1: Rick grew up in a troubled household. Sentence2: He never found good support in family, and turned to gangs. Sentence3: It wasn't long before Rick got shot in a robbery. Sentence4: He is happy now.
Example solution: 4, The incident caused him to turn a new leaf.
Example explanation: As mentioned in fourth sentence, he is happy now; so, the incident turned a new leaf to Rick's life.

Problem: Sentence1: Amy went to the grocery store after work. Sentence2: She had a short list of items to buy. Sentence3: The store was out of half the items. Sentence4: After that she was able to go home and cook a good meal.

Solution: 4, Amy had to go to a second grocery store.