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: Herman was getting tired of his store-bought coffee. Sentence2: He decided to buy the beans and brew it himself. Sentence3: His first batch came out weak and terrible. Sentence4: His second batch was a little better.

He kept improving, and in time was brewing great coffee.