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: I needed one for my cell phone. Sentence2: The case arrived without a lanyard. Sentence3: The website said the case had a bracket but not a lanyard. Sentence4: I felt foolish.
Example Output: 1, I bought a phone case with a lanyard.

Example Input: Sentence1: Luckily, Mary loved pandas, as was excited to get started. Sentence2: As soon as she got home, Mary booted up her computer and began. Sentence3: She wrote about all she knew and researched a little too! Sentence4: Mary couldn't wait to present her report.
Example Output: 1, At school, Mary received an assignment to write an essay about pandas.

Example Input: Sentence1: Ellie had a lot of homework to do. Sentence2: After she had finished that, she wrote a book report. Sentence3: The last assignment was a study guide, which took her ten minutes. Sentence4: Ellie was felt prepared for her schooling.
Example Output:
2, She started with her math homework.