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: Alfredo realizes that his stereo system at home is getting old. Sentence2: He decides to look for a replacement. Sentence3: Alfredo buys a great stereo system on sale at a local store. Sentence4: He sets it up at home and it sounds great! Sentence5: Alfredo feels happy now that he has a new stereo system at home.

Answer: Alfredo

Question: Sentence1: I was cooking for a party. Sentence2: My friend had an idea for a great treat. Sentence3: He said to mix apples and scrambled eggs. Sentence4: I tried it just to see what it was like. Sentence5: The smell was so bad that people ran out of the party.

Answer: I (myself), People at the party, My friend, People

Question: Sentence1: David was a quiet kid. Sentence2: At school, a lot of kids picked on him. Sentence3: One day, a boy was messing with him and insulting him. Sentence4: He got so mad, he decided to fight back. Sentence5: He punched him in the face and the boy didn't bully him ever again.

Answer:
Boy, Kids, David