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: Tony was making a pizza in his restaurant. Sentence2: Suddenly, an order for some french fries came in. Sentence3: Tony grabbed some fries and threw them into the fryer. Sentence4: His sloppiness caused a large grease fire everywhere. Sentence5: Tony grabbed his special fire extinguisher, and put out the flames.
A:
Tony