Detailed 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.
Q: Sentence1: Sam was nervous about going to school. Sentence2: It was his first day in high-school. Sentence3: Everything went better than expected. Sentence4: Sam was less afraid his second day. Sentence5: He looked forward to going to school eventually.
A:
Sam