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: My grandmother stayed in her old home for a few days. Sentence2: She ran the swamp cooler why she was there. Sentence3: She forgot and left the water on. Sentence4: Months after she left, a family member went to check on the house. Sentence5: The swamp cooler was sitting in the basement rather than the attic.
Output:
Grandmother