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: Sally was desperate for money. Sentence2: She needed to pay rent and was backed up on bills. Sentence3: She took out a payday loan to keep afloat. Sentence4: Now she is further in debt and more desperate. Sentence5: She contemplated suicide when she was evicted.

Output: Sally

Input: Consider Input: Sentence1: They planted a sunflower garden at their house in the city. Sentence2: They watched it grow all summer. Sentence3: The traffic by their house got heavy when the sunflowers bloomed. Sentence4: Many people yelled something nice as they drove past the garden. Sentence5: When the sunflowers died the traffic went back to normal.

Output: Other people

Input: Consider Input: Sentence1: No matter what Bill tries he can't grow a beard. Sentence2: So he goes to the doctor. Sentence3: After running several tests they figure out he has too much estrogen. Sentence4: So they give him some testosterone injections. Sentence5: Soon he is growing a beard,
Output: Bill, Doctor