Read this: The city has a unique status in Brazil, as it is an administrative division rather than a legal municipality like other cities in Brazil. The name 'Brasília' is commonly used as a synonym for the Federal District through synecdoche; However, the Federal District is composed of 31 administrative regions, only one of which is Brasília proper, with a population of 209,926 in a 2011 survey; Demographic publications generally do not make this distinction and list the population of Brasília as synonymous with the population of the Federal District, considering the whole of it as its metropolitan area. The city was one of the main host cities of the 2014 FIFA World Cup. Additionally, Brasília hosted the 2013 FIFA Confederations Cup.

What does Brasilia's metro area consist of?
What is the answer? (If it cannot be answered, return "unanswerable")
the Federal District