Name the US R&B for 1981
CREATE TABLE "singles" (
  "year" real,
  "single" text,
  "u_s_hot_100" text,
  "u_s_dance" text,
  "u_s_r_b" text,
  "album" text
);
SELECT "u_s_r_b" FROM "singles" WHERE "year"=1981;