Given the task definition and input, reply with output. 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: Wendy was in a kpop girl group. Sentence2: They told her she couldn't eat anything except vegetables. Sentence3: Wendy made a big plate of spaghetti. Sentence4: They said what are you doing Wendy! Sentence5: Wendy said grain was technically a vegetable.
Girl group, Wendy