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.

Input: Consider Input: Sentence1: Carl needed to lose weight. Sentence2: He found it very hard since he loved candy. Sentence3: He decided he would stop having candy in the house. Sentence4: He found it much easier to lose weight this way. Sentence5: Soon, Carl was down ten pounds and didn't miss eating candy at all.

Output: Carl

Input: Consider Input: Sentence1: June worked at a tape factory. Sentence2: She didn't think her job was very rewarding. Sentence3: She decided to leave her job. Sentence4: She decided to be an entrepreneur. Sentence5: She made a million dollars.

Output: June

Input: Consider Input: Sentence1: Martha stared at the glowing television screen, unblinking. Sentence2: Her hands gripped the blanket tightly. Sentence3: The television drama was reaching the climax of the episode. Sentence4: When the twist was revealed, Martha let out a scream. Sentence5: She immediately called her best friend.
Output: Martha, Best friend