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: I didn't have money to buy dog food. Sentence2: I made my dog some white rice and eggs. Sentence3: She ate it quickly. Sentence4: When we went outside she ate dirt. Sentence5: I got free dog food samples from the store to tide her over.
Output:
I (myself), Dog