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: 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.

Answer: Tom

Question: Sentence1: Dave was a scientist. Sentence2: Dave wanted to make a great scientific discovery. Sentence3: Dave worked with algae to make electricity. Sentence4: Dave discovered he could make electricity with algae! Sentence5: Dave was awarded for his great discovery.

Answer: Dave

Question: Sentence1: It was the first morning of Kate's trip in Las Vegas. Sentence2: Kate wanted to go to a restaurant for breakfast. Sentence3: But her friends wanted to get room service. Sentence4: Kate was leery because she always heard room service was expensive. Sentence5: But she decided to go along with it just for the experience.

Answer:
Kate, Her friends