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: Sarah went with her friends to the water park. Sentence2: They paid for their tickets and got into their swimsuits. Sentence3: They went down the slide and had a lot of fun. Sentence4: They went back the next day.

SOLUTION: 3, They waited in line for the biggest slide.

PROBLEM: Sentence1: There, she went to the very tip of the island. Sentence2: She went to the beach at Montauk Point. Sentence3: It was cold and windswept. Sentence4: Rose shielded her face from the wind.

SOLUTION: 1, Rose took a train to Long Island.

PROBLEM: Sentence1: Joe bought a skateboard with his savings. Sentence2: He took his new skateboard to the park to show it off to his friends. Sentence3: He spent four hours at the hospital getting his arm set. Sentence4: Joe was in terrible pain.

SOLUTION:
3, While doing a trick, Joe fell and broke his arm.