Read the following question and then pick a category that describes the question.
Question: What terror of the sea did Johnny Horton sing about ?
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
Human being, Description. (Johnny Horton is a human being and the question asks about a description of something he sang about, which is