Table: region_data
Columns: danish_name
english_name
seat_of_administration
largest_city
population_january_1_2008
area_km
pop_density_per_km

Question: What is the population density of the Capital Region of Denmark?
SQL: SELECT "pop_density_per_km" FROM region_data WHERE "english_name" = 'Capital Region of Denmark'

Question: In the region where Roskilde is the largest city, what is the seat of administration?
SQL: SELECT "seat_of_administration" FROM region_data WHERE "largest_city" = 'Roskilde'

Question: What is the minimum population of the region in which Roskilde is the largest city?
SQL: SELECT MIN("population_january_1_2008") FROM region_data WHERE "largest_city" = 'Roskilde'