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: Ezekiel was herding his sheep one fall evening. Sentence2: He noticed a wolf running along a hill in the distance. Sentence3: Ezekiel put on his wolf hide and crouched towards the wolf. Sentence4: The wolf approached and sniffed Ezekiel. Sentence5: Ezekiel jumped from the hide and stabbed the wolf in the neck.
Output:
A wolf, Ezekiel