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.
Q: Sentence1: My father wanted to buy some fish at the pet store. Sentence2: We drove to the store and talked about what fish to get. Sentence3: At the store we saw fat goldfish and small turtles. Sentence4: We decided to buy three goldfish and some fish food. Sentence5: When we returned home we dumped the goldfish into their new bowl.
A:
Goldfish, Father, Turtles