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: My nephew Greg, was picked to be in a boy band. Sentence2: I went to the group's first concert in a nice size venue. Sentence3: The five teen boys sang and danced for an hour. Sentence4: The concert and all the boys were a huge hit. Sentence5: From this the boy band Dream Street was formed.
A:
I (myself), Nephew greg, Five teen boys