instruction:
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.
question:
Sentence1: Tom had jealousy issues. Sentence2: He found his girlfriend with a strange guy. Sentence3: Tom confronted them both in an angry fashion. Sentence4: They tried to explain to Tom that they were just cousins. Sentence5: Tom knew they were lying.
answer:
Girlfriend, Guy, Tom

question:
Sentence1: Billy wanted a car. Sentence2: He tried to get a loan but they said he didn't make enough money. Sentence3: Billy couldn't get a better paying job because he didn't have a car. Sentence4: He saved for nine months, until he had enough money for a car. Sentence5: Now that he has a new car and a new job.
answer:
Billy

question:
Sentence1: Today my professor didn't show up to class. Sentence2: He didn't tell us beforehand. Sentence3: My classmates and I were unsure about what to do. Sentence4: We all waited in the classroom for a long time. Sentence5: Eventually we all got tired of waiting and left.
answer:
I (myself), Professor