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.
Input: Sentence1: Burt was in charge of fireworks  for the town fair. Sentence2: He was nervous because it was his first time. Sentence3: He loaded in a large firework and prepared to fire it. Sentence4: Once he launched it it only went 20 feet up.

Burt looked at it for a second and then jumped for cover.