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: Will had lunch with a friend at a local eatery. Sentence2: The following day, Will began to urinate blood! Sentence3: Will went to the hospital to get checked out. Sentence4: They ran tests to determine what was wrong with Will. Sentence5: They found that Will had gotten severe food poisoning from the eatery.
Output:
Will, The hospital, A friend