CREATE TABLE employment (company_id NUMBER, people_id NUMBER, year_working NUMBER)
CREATE TABLE people (people_id NUMBER, age NUMBER, name CLOB, nationality CLOB, graduation_college CLOB)
CREATE TABLE company (company_id NUMBER, name CLOB, headquarters CLOB, industry CLOB, sales_in_billion NUMBER, profits_in_billion NUMBER, assets_in_billion NUMBER, market_value_in_billion NUMBER)

What is the headquarter of the company with the largest sales?
SELECT headquarters FROM company ORDER BY sales_in_billion DESC LIMIT 1
SELECT "headquarters" FROM "company" ORDER BY "sales_in_billion" DESC FETCH FIRST 1 ROWS ONLY