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.

Example Input: Sentence1: Bob started working on Mturk to get some money. Sentence2: He needed a good place to find helpful people and good HITs. Sentence3: Bob came across a forum called the MTG. Sentence4: He talked on this forum and was very happy to be involved. Sentence5: Bob eventually game a lead moderator of the MTG!
Example Output: Bob, Helpful people, Lead moderator

Example Input: Sentence1: It was early December. Sentence2: My mom had been fighting cancer. Sentence3: She knew her time was near. Sentence4: She promised she would look after me in heaven. Sentence5: She died in her sleep.
Example Output: I (myself), My mom

Example Input: Sentence1: Brianna loved the beach. Sentence2: She could stare at the ocean all day. Sentence3: She liked to splash in the surf and feel the ocean breeze. Sentence4: She laid in the beach chair for an entire day. Sentence5: Brianna felt relaxed and happy.
Example Output:
Brianna