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: Linda went to buy some frozen yogurt. Sentence2: She saw some white yogurt and assumed it was vanilla. Sentence3: She loved vanilla, so that was what she got. Sentence4: Linda was very disappointed.

SOLUTION: 4, She tasted it and it was horrible.

PROBLEM: Sentence1: Nancy was sitting near the science building. Sentence2: She didn't notice until she looked around. Sentence3: Ian threw a pie directly in her face. Sentence4: Nancy began to cry and felt humiliated.

SOLUTION: 2, Ian tried to sneak close to her.

PROBLEM: Sentence1: Gina's dad turned on the water hose for her. Sentence2: He watched as she sprayed the soda spill on the porch. Sentence3: It had been sitting there for hours. Sentence4: It was a dried gooey mess by the time she began cleaning it.

SOLUTION:
5, Gina finally got it all cleaned after a couple of hours.