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: Tyson had a new puppy. Sentence2: He loved the puppy very much. Sentence3: One day, the puppy ran away. Sentence4: Tyson was very sad.

He decided he needed to pay better attention to his pets.