Q: 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: Their kitchen was a pretty unremarkable place. Sentence2: It was like many other kitchens, but their was one exception. Sentence3: Helen's mom was cooking here and she was amazing. Sentence4: She baked a pie today and the smell was intoxicating. Sentence5: Helen was finally able to taste the pie and it was sensational.
A:
Helen's mom, Helen