TASK DEFINITION: In this task, you're given a four sentences of story written in natural language. Your job is to complete end part of the story by predicting appropriate last sentence which is coherent with the given sentences.
PROBLEM: Sentence1: I went to the zoo. Sentence2: I saw some monkeys. Sentence3: I wished I had a pet monkey. Sentence4: Then I saw a monkey attack another monkey.

SOLUTION: I realized I didn't want a pet monkey anymore.

PROBLEM: Sentence1: Margaret had an ultrasound scheduled for her pregnancy. Sentence2: She arrived at the office on time. Sentence3: Then she tried to check in. Sentence4: There was a problem with her insurance.

SOLUTION: Unfortunately, the appointment had to be postponed.

PROBLEM: Sentence1: Seth always wanted to play chess, but he needed an opponent. Sentence2: One day a teacher at his high school established a chess club. Sentence3: Seth joined the chess club and had the chance to play chess a lot. Sentence4: He began spending more time playing chess than anything else he did.

SOLUTION:
Eventually Seth stopped enjoying chess after playing it so much.