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.
Q: Sentence1: Bernadette wanted to enter a marathon. Sentence2: She trained at the gym four days a week. Sentence3: The day of the marathon arrived. Sentence4: She became winded and had to stop near half-way. Sentence5: Bernadette decided that her future workouts needed more cardio.
A:
Bernadette