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: 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.
A:
Dave