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: My mom took me grocery shopping. Sentence2: She let me pick out all the food. Sentence3: I picked out a lot of candy and snacks! Sentence4: Then, she went to the register and paid for it all.
Example Output: 5, I ate a lot of candy that day.

Example Input: Sentence1: Gina went to her 6th hour class. Sentence2: Gina hated gym, and all things related. Sentence3: She was horrified when the teacher made them run the first day. Sentence4: Gina cried at the end.
Example Output: 2, It was gym.

Example Input: Sentence1: Kelly was skiing when suddenly she heard a large commotion behind her. Sentence2: She looked back and saw a wall of snow coming towards her. Sentence3: She panicked and started skiing faster down the slope. Sentence4: As the avalanche caught up to her she quickly jumped into some trees.
Example Output:
5, Kelly grabbed a tree and hung on tight.