Definition: In this task you are given a short story and a question regarding that story. You must answer the question based on the events of the story. Try to use the same words in the story to answer each question. You should completely answer the question in a short answer. Do not include information that is unnecessary to answer the question.
Input: Chris got a new puppy a few weeks ago. He loved having a pet, but the puppy liked to run away from the yard. Chris decided he needed to build a fence. After many weeks of hard work Chris had completed his fence. He never imagined a puppy would be so much work.
Why did Chris decide he needed to build a fence?
Output:
the puppy liked to run from the yard.