What was the name for the locomotive with a type of 2-8-0 and a number of 20?
CREATE TABLE "locomotives" (
  "number" real,
  "name" text,
  "builder" text,
  "type" text,
  "date" text,
  "works_number" text
);
SELECT "name" FROM "locomotives" WHERE "type"='2-8-0' AND "number"=20;