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: Sally was sad that she had no one to spend Christmas with. Sentence2: She decided to spend her holidays make others happy. Sentence3: She went shopping and purchased a bunch of different toys. Sentence4: On Christmas day she went to the children's home. Sentence5: She gave out the presents to the kids and had the best Christmas ever.

Ex Output:
Kids, Sally, Children, Others

Ex Input:
Sentence1: It snowed a lot yesterday. Sentence2: Sally and I had to shovel the sidewalk. Sentence3: Sally made a snowball and threw at me. Sentence4: I made a snowball and threw it back at Sally. Sentence5: We ended of having a snowball fight instead of shoveling snow.

Ex Output:
I (myself), Sally