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: He does not intend on buying anything, but just wants to walk around. Sentence2: However, he sees a very nice shirt on sale. Sentence3: Chester buys the shirt because the price is so good. Sentence4: Chester was very pleased with the shirt he bought.
Example Output: 1, Chester decides to go to the mall one afternoon.

Example Input: Sentence1: There, she went to the very tip of the island. Sentence2: She went to the beach at Montauk Point. Sentence3: It was cold and windswept. Sentence4: Rose shielded her face from the wind.
Example Output: 1, Rose took a train to Long Island.

Example Input: Sentence1: Jennifer wanted to join the school band. Sentence2: She began taking lessons for playing the cello. Sentence3: She made progress, but not quickly. Sentence4: She didn't feel ready to try out for the band.
Example Output:
5, Jennifer worked hard on her lessons and got into the band.