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.

Input: Consider Input: Sentence1: Rucksack Rod was a traveling hobo. Sentence2: He got by on the kindness of others. Sentence3: The trains would often slow just enough for him to get on. Sentence4: While on the rails one day, he spied a girl who looked hungry. Sentence5: Rod shared what food he could with her.

Output: Rucksack rod, Girl, Others

Input: Consider Input: Sentence1: Simon didn't like anyone and no one liked him either. Sentence2: He was mean and liked to hurt little animals. Sentence3: One day, a young boy went to him with a frog. Sentence4: Simon took the frog and was about to hurt it when the boy screamed. Sentence5: Simon was so touched, he put the frog on the ground and left.

Output: Boy, Simon, Frog

Input: Consider Input: Sentence1: Marianne didn't want to go to the concert. Sentence2: But when her friend Roxie called, she didn't say no. Sentence3: She prepped herself as if she really wanted to go. Sentence4: And when Roxie picked her up she even smiled. Sentence5: At the concert, she was bored, but happy for her friend.
Output: Roxie, Marianne