What are the investors who have invested in both entrepreneurs who requested more than 140000 and entrepreneurs who requested less than 120000?
SELECT Investor FROM entrepreneur WHERE Money_Requested  >  140000 INTERSECT SELECT Investor FROM entrepreneur WHERE Money_Requested  <  120000
investors who have invested in both = INTERSECT; entrepreneurs who requested more than 140000 refers to Money_Requested > 140000; entrepreneurs who requested less than 120000 refers to Money_Requested < 120000;