I want to know the answer to the following question:
As of 2000, how many people lived in the Plano Piloto?
All the background I'm provided with is that "The main purpose of the metro is to serve cities, such as Samambaia, Taguatinga and Ceilândia, as well as Guará and Águas Claras.". Is that enough to answer the question?
Answer: no