CREATE TABLE people (people_id NUMBER, name CLOB, height NUMBER, weight NUMBER, date_of_birth CLOB)
CREATE TABLE entrepreneur (entrepreneur_id NUMBER, people_id NUMBER, company CLOB, money_requested NUMBER, investor CLOB)

What are the names of people who are not entrepreneurs?
SELECT name FROM people WHERE NOT people_id IN (SELECT people_id FROM entrepreneur)
SELECT "name" FROM "people" WHERE NOT "people_id" IN (SELECT "people_id" FROM "entrepreneur")