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.

Ex Input:
Sentence1: Kelly's toddler was suffering from a horrible cough. Sentence2: It was keeping her awake at night. Sentence3: Finally, the baby fell asleep in a semi-sitting position on the couch. Sentence4: Kelly was relieved to see that the child wasn't coughing. Sentence5: She decided to leave the child where she was, so she could get rested.

Ex Output:
Toddler

Ex Input:
Sentence1: Tim's friend always visited when it town. Sentence2: He always waited until the last minute to announce his arrival. Sentence3: Tim got annoyed by that after a while. Sentence4: Soon Tim stopped hanging out with the friend as much. Sentence5: Eventually the friend stopped inviting instead.

Ex Output:
Tim, Tim's friend

Ex Input:
Sentence1: Lucy was on her way to work. Sentence2: There was a terrible snowstorm outside. Sentence3: To her dismay she got stuck in the snow. Sentence4: Finally an hour later, Lucy got out. Sentence5: Lucy ended up being late to work.

Ex Output:
Lucy