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For example , Wattenscheid , which was a town in its own right until 1974 , is now a " Stadtbezirk " within the city of Bochum in the Ruhr area of North Rhine-Westphalia .
 Wattenscheid, Bochum, Ruhr, North Rhine-Westphalia
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:
 Wattenscheid, Bochum, Ruhr, North Rhine-Westphalia