What is the U.S. rap ranking in 2000 of the U.S. 105 single?
CREATE TABLE "singles" (
  "year" real,
  "u_s" text,
  "u_s_r_b" text,
  "u_s_rap" text,
  "album" text
);
SELECT "u_s_rap" FROM "singles" WHERE "year"=2000 AND "u_s"='105';