TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: Which evolutionary biologist wrote The Ancestor's Tale in 2004?

SOLUTION: the ancestor's tale

PROBLEM: What is the nationality of Chelsy Davy, former girlfriend of Prince Harry?

SOLUTION: chelsy davy

PROBLEM: Ageusia is the loss of which sense?

SOLUTION:
ageusia