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 goldfish barnacles was getting old. Sentence2: I took him to the vet and they said there was nothing they could do. Sentence3: Barnacles was dying. Sentence4: The next morning he was floating so I flushed him away. Sentence5: My heart misses him and will forever be away.
Output:
I (myself), Vet, Barnacles