You will be given a definition of a task first, then some input of the task.
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.

Sentence1: The goat went into the barnyard. Sentence2: The chickens were by the feed area. Sentence3: The chickens chased the goat away. Sentence4: The farmer finally ran the chickens off. Sentence5: The goat could finally eat.
Output:
Chickens, Goat, Farmer