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: Then, his friend told him that plastic is bad for the environment. Sentence2: Bob decided to forego his plastic bags. Sentence3: Bob invested in some reuseable grocery bags. Sentence4: Bob used his reusable grocery bags to go shopping.
Example Output: 1, Bob used plastic grocery bags to go shopping.

Example Input: Sentence1: Jasmine did not study for her big math test. Sentence2: She figured she could just wing it. Sentence3: Jasmine soon realized the test was very difficult. Sentence4: She decided to cheat by looking at her neighbor's paper.
Example Output: 5, The teacher caught her and gave her detention.

Example Input: Sentence1: Bindu planned a party with her friends. Sentence2: They met at her house to discuss what food and band to use. Sentence3: One of Bindu's friends brought samosas and doogh. Sentence4: Four friends played music at the party.
Example Output:
5, Everyone had a great time.