Question: What was the 2010 census population of this united city-borough located on Baranof Island, from which the government of what was then the District of Alaska was moved in 1906?
{'answer': '8,881', 'supporting_facts': [['Juneau, Alaska', 0], ['Juneau, Alaska', 2], ['Sitka, Alaska', 0], ['Sitka, Alaska', 1]]}