Question: What dorms have no Study Room as an amenity? | Do you mean among those with a TV Lounge? | Yes.
SQL: 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' 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   =   'Study Room'