CREATE TABLE "top_43_train_services_by_distance" (
  "no" real,
  "origin_city_country" text,
  "destination_city_country" text,
  "train_name_no" text,
  "operator_name" text,
  "distance" text,
  "no_of_stops" text,
  "frequency" text,
  "scheduled_running_time" text
);

Question: What is the operator name when the distance is 3105km?
SQL: SELECT "operator_name" FROM "top_43_train_services_by_distance" WHERE "distance"='3105km';

Question: What is the distance for the train nameno is hapa sup express /12997?
SQL: SELECT "distance" FROM "top_43_train_services_by_distance" WHERE "train_name_no"='Hapa sup Express /12997';

Question: what is the no when the distance is 4168km?
SQL: SELECT "no" FROM "top_43_train_services_by_distance" WHERE "distance"='4168km';