This is a question with answer options. What kind of thing would the answer to the question "How did Rocky Marciano die ?" be an entity, an abbreviation, a description, a human, a location, or a numeric value?

OPT:
 (1). description;
 (2). entity;
 (3). abbreviation;
 (4). human;
 (5). numeric;
 (6). location;
(1).