Table schema:
CREATE TABLE CAR_MAKERS (Id VARCHAR, FullName VARCHAR); CREATE TABLE MODEL_LIST (model VARCHAR, Model VARCHAR, Maker VARCHAR); CREATE TABLE CARS_DATA (Id VARCHAR, weight VARCHAR); CREATE TABLE CAR_NAMES (Model VARCHAR, MakeId VARCHAR)

Question: Which models are lighter than 3500 but not built by the 'Ford Motor Company'?
SQL: SELECT DISTINCT T1.model FROM MODEL_LIST AS T1 JOIN CAR_NAMES AS T2 ON T1.Model = T2.Model JOIN CARS_DATA AS T3 ON T2.MakeId = T3.Id JOIN CAR_MAKERS AS T4 ON T1.Maker = T4.Id WHERE T3.weight < 3500 AND T4.FullName <> 'Ford Motor Company'