Here is a single or multi-choice question: What Vladimir Nabokov novel features Professor Humbert in love with a 12-year-old girl ?

Would the answer to this question be an entity, an abbreviation, a description, a human, a location, or a numeric value?


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