Q: In this task, you're given a story (which contains five sentences only). Your task is to find all the characters which are available in the given story.
Sentence1: Chris got a new puppy a few weeks ago. Sentence2: He loved having a pet, but the puppy liked to run away from the yard. Sentence3: Chris decided he needed to build a fence. Sentence4: After many weeks of hard work Chris had completed his fence. Sentence5: He never imagined a puppy would be so much work.
A:
Chris, New puppy