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.

[Q]: Sentence1: Ken had just bought a new computer game. Sentence2: But he could not get it to work! Sentence3: So he called a smart friend over to help him install it. Sentence4: His friend got it figured out in no time. Sentence5: Soon the two boys were gaming together happily!
[A]: Ken, Friend

[Q]: Sentence1: Tom wanted to secure his future. Sentence2: He decided to learn how to program. Sentence3: He google searched for days to determine the best language. Sentence4: He decided that Ruby was the best programming language for him. Sentence5: He bought books on Ruby and worked hard, he learned Ruby well.
[A]: Tom

[Q]: Sentence1: Jake watched the cute puppy skitter and skate across the ice. Sentence2: Suddenly, it fell through, into the deathly cold water below! Sentence3: Jake dived into the newly created hole in the pond after it. Sentence4: He caught the dog up in his arms and swam towards the surface. Sentence5: Jake drowned as his head slammed into the ice, frozen back over above.
[A]:
Jake, Puppy