Task: Question Generation
Input (English): The nine largest and most renowned Technische Universitäten in Germany have formed TU9 German Institutes of Technology as community of interests. Technische Universitäten normally have faculties or departements of natural sciences and often of economics but can also have units of cultural and social sciences and arts. RWTH Aachen, TU Dresden and TU München also have a faculty of medicine associated with university hospitals (Klinikum Aachen, University Hospital Dresden, Rechts der Isar Hospital).
Output (English): How many Technische Universitäten make up the TU9 German Institutes of Technology?