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: Janie hated spinach with a passion. Sentence2: Her grandma had tried to make her eat it once. Sentence3: When she was at a friend's house, her mother served a delicious dip. Sentence4: She ate it all up without asking what it was. Sentence5: Then her friend's mom asked her if she liked the spinach dip.
Janie, Friend's mom, Friend, Grandma