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: Dan wanted to find the perfect gift for his mother's birthday. Sentence2: He shopped at the mall for hours and was unable to find anything. Sentence3: His mother saw his face when he walked in and asked what was wrong. Sentence4: Dan explained the situation and his mother was not upset.

SOLUTION: 3, He came home disappointed and without a gift.

PROBLEM: Sentence1: My mom took me grocery shopping. Sentence2: She let me pick out all the food. Sentence3: I picked out a lot of candy and snacks! Sentence4: Then, she went to the register and paid for it all.

SOLUTION: 5, I ate a lot of candy that day.

PROBLEM: Sentence1: Amy always wanted to play the flute. Sentence2: She practiced on her flute everyday for a week. Sentence3: It was terribly hard to play the flute. Sentence4: Amy was very committed.

SOLUTION:
2, The first day of band she told the teacher so.