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.
Input: Sentence1: Gina really needed a new cell phone. Sentence2: She'd dropped her old one so many times it barely worked. Sentence3: Her mother suggested she look online for a phone and protective case. Sentence4: Gina thought this was a great idea and searched online for hours. Sentence5: She finally found a great deal on a new phone with a matching case.
Output:
Gina