Can you tell me which one of them do not have TV Lounge?
SELECT dorm_name FROM dorm EXCEPT SELECT T1.dorm_name FROM dorm AS T1 JOIN has_amenity AS T2 ON T1.dormid   =   T2.dormid JOIN dorm_amenity AS T3 ON T2.amenid   =   T3.amenid WHERE T3.amenity_name   =   'TV Lounge'
dorms without 'TV Lounge' amenity are obtained by subtracting dorms with 'TV Lounge' from all dorms;