What is the date of entered service for the locomotive with a broad gauge and a serial no of 83-1018?
CREATE TABLE "locomotives" (
  "locomotive" text,
  "serial_no" text,
  "entered_service" text,
  "gauge" text,
  "livery" text
);
SELECT "entered_service" FROM "locomotives" WHERE "gauge"='broad' AND "serial_no"='83-1018';