52890
It is a militarised atoll just south of the equator in the central Indian Ocean , and the largest of 60 small islands comprising the Chagos Archipelago .
 Indian Ocean, Chagos Archipelago
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:
 Indian Ocean, Chagos Archipelago