Which words belong together?
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Erfurt, Psychologie, Mathematik, Medizin. (Subjects)
Germanistik, Hamburg, Berlin, Statdtroda. (City & places related names)
Robert, Juliane Jena, Sebastian. (Single names)
Bertolt Brecht, Thomas Mann, Friedrich Schiller, Johan Wolfgang von Goethe. (Composed names)
Hope it helped,
BioTeacher101