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: Cheyenne wanted to make lemonade. Sentence2: She went outside and picked some lemons. Sentence3: Cheyenne then began to juice them. Sentence4: She poured the juice into a glass. Sentence5: After taking a big gulp Cheyenne realized that she forgot the sugar.
Cheyenne