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: Gina's friend Mary wouldn't share. Sentence2: They both needed to use the school library books about dolphins. Sentence3: But Mary had beaten Gina and taken them all. Sentence4: And now she refused to share the books.
Example Output: 5, Gina's mother had to call Mary's mom to complain.

Example Input: Sentence1: Lina has two kids. Sentence2: Lina was cleaning their rooms and realized their drawers were stuffed. Sentence3: Lina had a big pile of clothes that were too small for her kids. Sentence4: Lina gave the clothes to charity.
Example Output: 3, She began to sort through the clothes.

Example Input: Sentence1: Ally wished for her boyfriend to pick her out a beautiful ring. Sentence2: She left jewelry store fliers on the counter. Sentence3: Next, she circled rings in magazines. Sentence4: She even mentioned them out loud in phone conversations.
Example Output:
5, Ally couldn't wait to get engaged.