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: A small snowstorm came through a town. Sentence2: The school roof buckled under the weight. Sentence3: A janitor climbed on top to inspect. Sentence4: The roof shook under the new weight.

SOLUTION: The janitor was frightened.

PROBLEM: Sentence1: Billy's mother set his alarm clock, so he could get up on his own. Sentence2: Billy turned off the alarm as soon as she left. Sentence3: The morning came and he did not wake up. Sentence4: His mother came in and poured cold water on him to wake him.

SOLUTION: He now keeps his alarm set hoping we wakes before his mother comes.

PROBLEM: Sentence1: Bob was helping his girlfriend paint her nails. Sentence2: He told her it was easy, no problem! Sentence3: But as he started to paint, he slopped polish all over her fingers. Sentence4: When he finished, her hands were a mess!

SOLUTION:
Bob realized he was pretty bad at nail-painting, after all.