27515
For example , the σ found for objects about the Milky Way 's supermassive black hole ( SMBH ) is about 75 km / s .
 Milky Way
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:
 Milky Way