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: After dropping her kids off at school, Tammy donated blood. Sentence2: Tammy then headed for the gym to her favorite aerobics class. Sentence3: Forty minutes into the intense workout Tammy passed out. Sentence4: Tammy learned a valuable lesson.

SOLUTION: 2, She drank some juice to refuel before running a few errands.

PROBLEM: Sentence1: John was cooking dinner last night. Sentence2: He was making pork chops. Sentence3: Unfortunately, he dropped a pan and burned himself. Sentence4: He had to go to the hospital.

SOLUTION: 5, John had a miserable evening.

PROBLEM: Sentence1: His train took him to the center of Sofia. Sentence2: He was amazed at the busy capital city. Sentence3: It was so beautiful and busy! Sentence4: Neil thought the country was wonderful.

SOLUTION:
1, Neil had just arrived in Bulgaria.