CREATE TABLE people (Name VARCHAR2, People_ID VARCHAR2)
CREATE TABLE employment (People_ID VARCHAR2, Company_ID VARCHAR2)
CREATE TABLE company (Company_ID VARCHAR2, Sales_in_Billion NUMBER)

Show the names of employees that work for companies with sales bigger than 200.
SELECT T2.Name FROM employment AS T1 JOIN people AS T2 ON T1.People_ID = T2.People_ID JOIN company AS T3 ON T1.Company_ID = T3.Company_ID WHERE T3.Sales_in_Billion > 200
SELECT "T2"."Name" FROM "employment" "T1" JOIN "people" "T2" ON "T1"."People_ID" = "T2"."People_ID" JOIN "company" "T3" ON "T1"."Company_ID" = "T3"."Company_ID" AND "T3"."Sales_in_Billion" > 200