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Subsequently , the geographer Otto Schlüter , in 1908 , argued that by defining geography as a " Landschaftskunde " ( landscape science ) would give geography a logical subject matter shared by no other discipline .
 Otto Schlüter
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Otto Schlüter