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: Then, his friend told him that plastic is bad for the environment. Sentence2: Bob decided to forego his plastic bags. Sentence3: Bob invested in some reuseable grocery bags. Sentence4: Bob used his reusable grocery bags to go shopping.

Ex Output:
1, Bob used plastic grocery bags to go shopping.

Ex Input:
Sentence1: It was summer. Sentence2: And Jeff's room was very hot. Sentence3: He saw dark blinds advertised to block heat. Sentence4: And he thought it would make a noticeable difference.

Ex Output:
5, Joe was pleased when he put up the new blinds.

Ex Input:
Sentence1: Gary was a brave child. Sentence2: One day he decided to climb over the fence in his backyard. Sentence3: They found him sitting on the swing at the park. Sentence4: Gary's parents were relieved to find him.

Ex Output:
3, His parents looked all over for him.