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: Ronald wants to think of something to do with his friends. Sentence2: He decides that he would like to go bowling with them. Sentence3: They go to the local bowling alley in the afternoon. Sentence4: Ronald bowls very well. Sentence5: He is happy that he found something to do with his friends.

Ex Output:
Ronald, His friends

Ex Input:
Sentence1: Jeff is addicted to working out and he goes everyday. Sentence2: He just started a new job that has him working long hours. Sentence3: These long hours prevent him from being able to go to the gym. Sentence4: By the time Jeff gets off work the gym is closed. Sentence5: Jeff went out and bought all the stuff he needs to work out athome.

Ex Output:
Jeff

Ex Input:
Sentence1: I asked my wife if she wall call me Ragnar Lothbrok. Sentence2: She said I had to earn it. Sentence3: I went to the grocery store and got some steak. Sentence4: I came home and pretended to hunt for meat. Sentence5: She wasn't impressed.

Ex Output:
I (myself), My wife