16712
And , while many raids are likely carried out by crime syndicates , there is evidence that many have been the work of the Free Aceh Movement of northern Sumatra , an Islamist separatist organization that has been fighting to gain independence from Indonesia since 1976 .
 Indonesia, Sumatra
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: ethnicity, place lived, geographic distribution, company industry, country of administrative divisions, administrative division of country, location contains, person of company, profession, ethnicity of people, company shareholder among major shareholders, sports team of location, religion, neighborhood of, company major shareholders, place of death, nationality, children, company founders, company founded place, country of capital, company advisors, sports team location of teams, place of birth 
Text: {0} 
Answer:
 Indonesia, Sumatra