What US Country released an album of singles only in 1967?
CREATE TABLE "singles" (
  "year" real,
  "single" text,
  "u_s_country" text,
  "u_s" text,
  "u_s_ac" text,
  "album" text
);
SELECT "u_s_country" FROM "singles" WHERE "album"='singles only' AND "year"=1967;