Table: historical_regions_of_armenia
Columns: province_ashkharh
armenian_name
area_km
number_of_cantons_gavars
center

Question: How big (in km2) is Persarmenia?
SQL: SELECT "area_km" FROM historical_regions_of_armenia WHERE "province_ashkharh" = 'Persarmenia'

Question: What's the center of the Artsakh province?
SQL: SELECT "center" FROM historical_regions_of_armenia WHERE "province_ashkharh" = 'Artsakh'

Question: How many different provinces is Baghaberd the center of?
SQL: SELECT COUNT("province_ashkharh") FROM historical_regions_of_armenia WHERE "center" = 'Baghaberd'

Question: How big is the province with the Armenian name of փայտակարան?
SQL: SELECT MIN("area_km") FROM historical_regions_of_armenia WHERE "armenian_name" = 'Փայտակարան'

Question: What's the center of the province that spreads out on 23860 km2?
SQL: SELECT "center" FROM historical_regions_of_armenia WHERE "area_km" = 23860

Question: How many different numbers of cantons does the province with the Armenian name վասպուրական have?
SQL: SELECT COUNT("number_of_cantons_gavars") FROM historical_regions_of_armenia WHERE "armenian_name" = 'Վասպուրական'