Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
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Question: Princess Estelle, Duchess of Ostergotland, granddaughter to King Carl XVI Gustaf, became 2nd in line to what nation's throne when born in 2012?

Answer: carl xvi gustaf of sweden


Question: What is the official language of the Dominican Republic?

Answer: dominican republic


Question: What nation has 27 states, most of which exceed the area of an entire moderately-sized country, and include Acre, Minas Gerais, Sergipe, and Amazonas?

Answer:
minas gerais