Answer:
300+ Protestants burned as heretics
Explanation:
The correct answer is: Johannesburg!
Johannesburg is in fact the capital of Guanteng and one of five districts in this province.
It is however not the capital of South Africa, which is a status shared by three cities: Pretoria, Bloemfontein and Cape Town (with Pretoria having the primary status).
The subordinate clause is less import than the main clause so the answer is true