TASK DEFINITION: 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.
PROBLEM: Sentence1: Ken was on vacation in the tropics. Sentence2: He was learning to scuba dive. Sentence3: He passed his certification course and then dived every day. Sentence4: Soon he was learning lots of facts about the ocean and exploring.

SOLUTION: 5, It was the best vacation Ken had ever taken.

PROBLEM: Sentence1: Anne had just turned 50 when she noticed something unsettling. Sentence2: Her hair was beginning to come in gray! Sentence3: Then she decided to honor her wisdom and Years. Sentence4: She wore her gray hair with pride.

SOLUTION: 3, She thought about dyeing it to hide the gray.

PROBLEM: Sentence1: My friend went out one night looking to find love. Sentence2: He ended up getting pretty drunk. Sentence3: After a while, we lost track of our friend. Sentence4: Our friend ended up home at three am with a girl.

SOLUTION:
3, The next thing we knew he was flirting with a gay man.