Task: Explanation
Input (English): Cologne Cathedral (German: "Kölner Dom" , officially "Hohe Domkirche Sankt Petrus ", Latin: "Ecclesia Cathedralis Sanctorum Petri" , English: Cathedral Church of Saint Peter) is a Roman Catholic cathedral in Cologne, Germany. It is the seat of the Archbishop of Cologne and of the administration of the Archdiocese of Cologne. It is a renowned monument of German Catholicism and Gothic architecture and was declared a World Heritage Site in 1996. It is Germany's most visited landmark, attracting an average of 20,000 people a day and currently the tallest twin-spired church at 157 m tall. Question: Eurovision Young Musicians 2016 took place outside a Roman Catholic cathedral in Cologne, Germany, that is the seat of who? Answer: Archbishop of Cologne
Output (English):  It is the seat of the Archbishop of Cologne and of the administration of the Archdiocese of Cologne.