question:
The concerts also helped them to reach a wider audience.
Whose incomes did public concerts help support?

answer: no

question:
The Metropole covers 814 square kilometers and has a population of 6.945 million persons.
How large is the Metropole?

answer: yes

question:
Those who held 'real power' dignities were more privileged but these dignities were not hereditary.
Was was unique about the dignities?

answer: yes

question:
But Sebastiao de Melo's greatest reforms were economic and financial, with the creation of several companies and guilds to regulate every commercial activity.
What were de Melo's greatest reforms?

answer:
yes