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.

Q: Sentence1: Maureen has always wanted to become a Biology teacher. Sentence2: She studies very hard to become an expert in Biology. Sentence3: Her friends tell her that Biology is too tough for her. Sentence4: Now Maureen shares her passion for Biology with students.

A: 4, However, she continues until she has her degree.
****
Q: Sentence1: His owner walked him up to the platform one day. Sentence2: He was scared to slide down. Sentence3: They continued to do this every day on their walk. Sentence4: The Malamute eventually tried to slide down the slide.

A: 1, The Malamute always sniffed at the slide during his walk.
****
Q: Sentence1: He went to the gun store and asked many questions. Sentence2: He looked at big guns and little guns. Sentence3: He decided he wanted to buy a big shotgun. Sentence4: Dave bought it and enjoyed his purchase.

A:
1, Dave wanted buy a gun.
****