What is the LNER class with an m 1914 NER class?
CREATE TABLE "classification" (
  "original_ner_class" text,
  "1914_ner_class" text,
  "lner_class" text,
  "cylinders" text,
  "driving_wheels" text
);
SELECT "lner_class" FROM "classification" WHERE "1914_ner_class"='m';