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: Karen's dog didn't know any tricks. Sentence2: She really wanted to teach him. Sentence3: She started teaching him to fetch. Sentence4: It took lots of practice.

He soon learned how to fetch really well!