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: Kate was sipping on orange soda and sketching in her sketch book. Sentence2: Her brother and his friend came in the room. Sentence3: They were throwing a football around. Sentence4: It landed and knocked over Kate's soda. Sentence5: The orange soda ruined Kate's drawing.

Ex Output:
Kate, Friend, Brother

Ex Input:
Sentence1: Sam went on his weekly fishing trip with his dad. Sentence2: Usually Sam only catches small fish, but this time it was different. Sentence3: The fish almost pulled him off balance, but he caught it. Sentence4: The fish was longer than he was tall, and it was his biggest catch. Sentence5: Sam and his dad got a picture with the fish and cherished the memory.

Ex Output:
Dad, The fish, Sam

Ex Input:
Sentence1: The Lake family planned a trip to Santa Fe. Sentence2: They left in a rented car in the middle of May. Sentence3: It was dark by the time the family arrived at their hotel. Sentence4: For three days they toured the city and met with family. Sentence5: They returned home happy and full of stories.

Ex Output:
The lake family, Family