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: Neil was in his mother's attic. Sentence2: He found a shoebox full of old family photos. Sentence3: Neil went to a copy service. Sentence4: He made several copies of all the pictures. Sentence5: Neil shared all the pictures with his family.

Ex Output:
Neil, Family, His mother

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: Joe was taking his son to a carnival. Sentence2: In the carnival Joe took his son to see a clown show. Sentence3: Joe's son loved seeing the clown. Sentence4: His son laughed at the clown. Sentence5: Joe was happy to see his son happy.

Ex Output:
The clown, Joe's son, Joe