What are the different models wthat are lighter than 3500 but were not built by the Ford Motor Company?
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';
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';
[{'Model': 'plymouth'}, {'Model': 'amc'}, {'Model': 'citroen'}, {'Model': 'buick'}, {'Model': 'toyota'}, {'Model': 'datsun'}, {'Model': 'volkswagen'}, {'Model': 'peugeot'}, {'Model': 'audi'}, {'Model': 'saab'}, {'Model': 'bmw'}, {'Model': 'chevrolet'}, {'Model': 'pontiac'}, {'Model': 'opel'}, {'Model': 'fiat'}, {'Model': 'dodge'}, {'Model': 'mazda'}, {'Model': 'volvo'}, {'Model': 'renault'}, {'Model': 'honda'}, {'Model': 'subaru'}, {'Model': 'oldsmobile'}, {'Model': 'mercedes-benz'}, {'Model': 'triumph'}, {'Model': 'chrysler'}, {'Model': 'nissan'}]