context: Common name: Heidelberg University, official name: Robert Karl University in Heidelberg (German: Ruprecht-Karls-Universität Heidelberg) and from its names: (Ruperto Carola, Heidelberg University). It is a German public research university located in Heidelberg, Baden-Württemberg, Germany. Founded in 1386 AD, it is the oldest university in Germany and the fourth oldest university to be established during the reign of the Holy Roman Empire. It is considered one of the most important and prestigious universities in Germany. Mixed education has been adopted since 1899. Currently it consists of 12 branch colleges from the university and awards for undergraduate (bachelor), postgraduate, and postgraduate degrees in about 100 majors. It is a German university of excellence, in addition to being a founding member of the Association of Research Universities in Europe, member of the Coimbra Group and also the Association of European Universities.
question: When was the University of Heidelberg founded?
answers.text: 1386