Definition: 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.
Input: Sentence1: Gina opened the cupboard one morning. Sentence2: She had a choice of five cereals waiting for her. Sentence3: She closed her eyes to pick one at random. Sentence4: When she fell on Lucky Charms, she sighed. Sentence5: She should have picked the Cheerios instead.
Output:
Gina