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Zadunaets za Azovom During the Russo-Turkish War ( 1828 – 1829 ) , the Danubian Sich Cossacks , previously living in exile in Ottoman controlled Danube Delta were split in loyalty towards the Orthodox Russian Empire , who they left in 1775 and Islam ic Ottoman Empire , which was about to start another war with Russia .
 organization: Cossacks; location: Ottoman; organization: Danube; location: Russian Empire; location: Ottoman Empire; location: Russia
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 organization: Cossacks; location: Ottoman; organization: Danube; location: Russian Empire; location: Ottoman Empire; location: Russia