What is the only established city of the Dothraki people?
Vaes Dothrak is the only permanent settlement of the Dothraki people. It is located northeast of the Dothraki Sea.
Instruction: What is the only established city of the Dothraki people?
Context: 
Response: Vaes Dothrak is the only permanent settlement of the Dothraki people. It is located northeast of the Dothraki Sea.