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: Thomas went to start his truck. Sentence2: It didn't want to turn. Sentence3: He got a friend to jump start his truck. Sentence4: Thomas brought his truck to a car parts store. Sentence5: Thomas bought a new battery.
A:
Thomas, Friend