65994
A 2004 study reported that sea cow bones discovered on Adak Island were around 1,700 years old , and sea cow bones discovered on Buldir Island were found to be around 1,600 years old .
 Adak Island, Buldir Island
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:
 Adak Island, Buldir Island