what is the date (from) where date (to) is 1919?
CREATE TABLE "list_of_town_tramway_systems_in_the_neth" (
  "name_of_system" text,
  "location" text,
  "traction_type" text,
  "date_from" text,
  "date_to" text,
  "notes" text
);
SELECT "date_from" FROM "list_of_town_tramway_systems_in_the_neth" WHERE "date_to"='1919';