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 gas station I frequent to buy coffee was robbed. Sentence2: I showed up one morning, and as I entered the door I was shoved aside. Sentence3: A man came running out and slammed the door into my face. Sentence4: Before I could collect myself, the clerk came running after. Sentence5: The man was a thief, and he was caught and arrested.
I (myself), The clerk, Gas station, Man