What is the name of the locomotive with a Glencar class?
CREATE TABLE "sligo_leitrim_and_northern_counties_rail" (
  "class" text,
  "type" text,
  "names" text,
  "quantity_made" text,
  "manufacturer" text,
  "date_made" text
);
SELECT "names" FROM "sligo_leitrim_and_northern_counties_rail" WHERE "class"='glencar';