The headquarter of Organization of Petroleum Exporting Countries (OPEC) is located in?
The headquarter of Organization of Petroleum Exporting Countries (OPEC) is located in?
پیٹرولیم برآمد کرنے والے ممالک کی تنظیم (OPEC) کا صدر دفتر کہاں واقع ہے؟
Explanation
Vienna is the capital of Austria.