title: University of Freiburg
context: When previous rector Prof. Dr. Jäger retired in 2008, law professor Prof. Dr. Andreas Voßkuhle was chosen as his successor. However, shortly after the start of his term, the Social Democratic Party of Germany nominated Voßkuhle as vice-president of the Federal Constitutional Court of Germany. Voßkuhle accepted the nomination, was confirmed, and took his seat on the court in May 2008. In July 2008, then vice-rector Prof. Dr. Hans-Jochen Schiewer was elected as successor to Voßkuhle. Schiewer has assumed the position of rector with the start of the winter term 2008/2009.
question: Who is the president of the University of Freiburg?
answers: Hans-Jochen Schiewer