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: I've been on an art kick lately. Sentence2: The book has a shopping list of necessary drawing supplies. Sentence3: I went to the store the other day and bought what I needed. Sentence4: I went home and practiced drawing.

Ex Output:
2, I received a drawing instruction book for Christmas.

Ex Input:
Sentence1: Tommy called on the girl who sat next to him in class. Sentence2: He asked if she thought that the class was good. Sentence3: She gave him a frown and sad that she's in a relationship. Sentence4: Tommy was really embarrassed.

Ex Output:
4, Tommy immediately turned around.

Ex Input:
Sentence1: I went on a hiking trip this summer. Sentence2: I went to go hike away from the campsite by myself. Sentence3: I got lost because I did not have any equipment on me. Sentence4: Eventually I found some trail markers.

Ex Output:
4, I walked for miles searching for my friends.