CREATE TABLE office_locations (building_id DECIMAL, company_id DECIMAL, move_in_year DECIMAL)
CREATE TABLE companies (id DECIMAL, name TEXT, headquarters TEXT, industry TEXT, sales_billion DECIMAL, profits_billion DECIMAL, assets_billion DECIMAL, market_value_billion TEXT)
CREATE TABLE buildings (id DECIMAL, name TEXT, city TEXT, height DECIMAL, stories DECIMAL, status TEXT)

Which industries have both companies with headquarter in 'USA' and companies with headquarter in 'China'?
SELECT industry FROM companies WHERE headquarters = "USA" INTERSECT SELECT industry FROM companies WHERE headquarters = "China"
SELECT "industry" FROM "companies" WHERE "USA" = "headquarters" INTERSECT SELECT "industry" FROM "companies" WHERE "China" = "headquarters"