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: Sean was at the lake with his family. Sentence2: He was swimming when he noticed something in the water. Sentence3: It looked like a floating stick. Sentence4: He realized that it was a water moccasin snake.

He quickly climbed out of the water.