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.
Q: Sentence1: Sam had never been to the beach. Sentence2: He was dying of cancer. Sentence3: He wanted to go before he died. Sentence4: His friends wanted to take him. Sentence5: Unfortunately they couldn't afford it.
A:
Sam's friends, Sam