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: Emory was mowing his grass. Sentence2: He hit the mower on a large rock. Sentence3: The blades became bent. Sentence4: Emory couldn't mow his grass and let it grow. Sentence5: By the end of summer, it looked like African savannah.
Output:
Emory