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: Lewis knew the cave like the back of his hand. Sentence2: Five first-time cavers walked behind him. Sentence3: Suddenly, a few bats flew down from the darkness above. Sentence4: All the people but Lewis ran back towards the cave's entrance.

Lewis laughed and told them not be afraid of the bats.