SELECT T2.name FROM train_station AS T1 JOIN train AS T2 ON T1.train_id  =  T2.train_id WHERE T1.station_id NOT IN (SELECT T4.station_id FROM train_station AS T3 JOIN station AS T4 ON T3.station_id  =  T4.station_id WHERE t4.location  =  "London")
Find the names of the trains that do not pass any station located in London.
SELECT T2.name FROM train_station AS T1 JOIN train AS T2 ON T1.train_id = T2.train_id WHERE T1.station_id NOT IN ( SELECT T4.station_id FROM train_station AS T3 JOIN station AS T4 ON T3.station_id = T4.station_id WHERE t4.location = `` London '' )
select t2 . name from train_station as t1 join train as t2 on t1 . train_id = t2 . train_id where t1 . station_id not in ( select t4 . station_id from train_station as t3 join station as t4 on t3 . station_id = t4 . station_id where t4 . location = value )
Find the names of the trains that do not pass any station located in London .