CREATE TABLE Companies (Industry VARCHAR2, Headquarters VARCHAR2)

Show the industries shared by companies whose headquarters are 'USA' and companies whose headquarters are 'China'.
SELECT Industry FROM Companies WHERE Headquarters = "USA" INTERSECT SELECT Industry FROM Companies WHERE Headquarters = "China"
SELECT "Industry" FROM "Companies" WHERE "Headquarters" = "USA" INTERSECT SELECT "Industry" FROM "Companies" WHERE "China" = "Headquarters"