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: Last Friday was Tad Dunkin's first race in nascar. Sentence2: He had been waiting for this his whole life. Sentence3: He was doing surprisingly well for a first timer. Sentence4: Tad was seriously injured.

SOLUTION: 4, Then he lost control and hit a wall.

PROBLEM: Sentence1: Amy, Lynn and Kim walked to the store near Lynn's house. Sentence2: While there they saw Lynn's crush Jim. Sentence3: He was a bag boy at the store. Sentence4: Jim asked Lynn on a date.

SOLUTION: 4, They stopped and talked to him for awhile.

PROBLEM: Sentence1: Lia was trying to lose weight. Sentence2: She cut out junk food and fatty foods. Sentence3: But she still struggled to lose weight. Sentence4: Then she began running every day on her treadmill.

SOLUTION:
5, She started losing weight.