I want to test the ability of students to read a passage and answer questions about it. Could you please come up with a good question for the passage "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)."? 

What is a category of sciences that is not natural sciences?