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: Charles didn't believe Calvin was on death row. Sentence2: They were friends since seventh grade. Sentence3: But Calvin made friends in a local gang. Sentence4: He shot a man over drugs and another man for insulting him. Sentence5: He ran from the police but is on death row in California.
Police, Charles, Calvin, Friends, Friend, Man