Read the following question and then pick a category that describes the question.
Question: What was the name of Robert Fulton 's most famous steamboat ?
What category is the question in? Choose one from Abbreviation, Entity, Description and abstract concept, Human being, Location, Numeric value. Respond with only the category and no additional text.
Entity
Entity (specifically, a human being in this case, but the question could also be answered with the name of the steamboat itself,