Instructions: 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: Sentence1: Rakesh was 10-years-old and his parents owned a motel. Sentence2: They believed their son Rakesh should have money to buy things. Sentence3: Rakesh bought toys from the hobby store, but his friend didn't. Sentence4: Rakesh gave his friend, Charles, $75! Sentence5: But Charles showed his mother the cash and she made him return it.
Output:
His parents, Motel, Rakesh, His mother