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.
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Question: Sentence1: Paul had a problem with drugs. Sentence2: His Father was very concerned for him. Sentence3: He put him in a rehab center to get help. Sentence4: Paul stayed there for sixty days. Sentence5: He learned how bad drugs really were and never did them again.

Answer: Paul, Father

Question: Sentence1: Charlie and Susan went on a date. Sentence2: They decided to eat at a nice restaurant. Sentence3: The two ordered a bottle of wine. Sentence4: Charlie ordered food for them both. Sentence5: The couple ate and drank and enjoyed themselves.

Answer: Charlie, Susan

Question: Sentence1: Chuck decided to rake the leaves in his yard. Sentence2: He worked long on that cool fall day. Sentence3: He collected the last of the leaves in a bag. Sentence4: It was then that a big wind blew through the tree branches. Sentence5: Chuck sighed as a carpet of leaves settled on his lawn.

Answer:
Chuck