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 posted an ad for guitar lessons online. Sentence2: He was contacted by a mother who wanted some lessons for her son. Sentence3: He went to their house the next day. Sentence4: The son met him and they went through a lesson.

When he was done, they paid him and he went home.