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: Carla was expecting a letter. Sentence2: She checked the mail. Sentence3: There was a pile of stuff in the box. Sentence4: It was all junk mail until the bottom of the stack.

The letter was at the bottom.