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.

Sentence1: Gina was at the store buying snacks. Sentence2: Her brother and his friend Joe were outside the doors. Sentence3: Gina normally avoided Joe, but there was no where to go now. Sentence4: Gina exited the store and tried to walk past them. Sentence5: Unfortunately, Joe saw her and yelled mean things as she walked away.
Brother, Gina, Joe, Store