You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.

Who was the first American President?
Solution: president of the united states
Why? The question talks about the president of the USA.

New input: July 17, 1890 marked the death of what Scottish moral philosopher, considered the father of modern economics, who wrote such classics as An Inquiry into the Nature and Causes of the Wealth of Nations and The Theory of Moral Sentiments?
Solution:
the wealth of nations