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.
Problem:Sentence1: Mary was invited by her friend to her first wine tasting event. Sentence2: Mary was happy she liked wine. Sentence3: Mary went and tasted many wines. Sentence4: Mary had a favorite. Sentence5: She bought a bottle of her favorite.
Solution:
Mary, Friend