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.

Ex Input:
Sentence1: My friend wants to be a doctor, so she took the MCAT. Sentence2: The first time she took it, she did not get a good enough score. Sentence3: She studied very hard and took it again. Sentence4: We took her out to drinks to celebrate.

Ex Output:
4, This time, she did very well!

Ex Input:
Sentence1: Unfortunately, Mike had no idea where he should go. Sentence2: He then decided to spin a globe and go where his finger landed. Sentence3: Mike's finger landed on Hawaii. Sentence4: Mike took a trip to Hawaii.

Ex Output:
1, Mike was tired of work and needed a vacation.

Ex Input:
Sentence1: Larry has decided to help out his friends prepare for a party. Sentence2: Larry slices tomato, lettuce, and other vegetables for the salad. Sentence3: When it is finished, he feels great. Sentence4: Larry was happy that he could contribute to the party.

Ex Output:
2, He needs to bring a salad to the party.