119643
The caldera , one of the largest in the world , contains the city of Aso as well as Takamori and Minamiaso enclosing the caldera extends about 18 " km east to west and about 25 " km north to south .
 Aso, Takamori, Minamiaso
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:
 Aso, Takamori, Minamiaso