CREATE TABLE "singles" (
  "year" real,
  "u_s" text,
  "u_s_r_b" text,
  "u_s_rap" text,
  "album" text
);

Question: What is the U.S. rap ranking in 2000 of the U.S. 105 single?
SQL: SELECT "u_s_rap" FROM "singles" WHERE "year"=2000 AND "u_s"='105';

Question: What is the U.S. rap rank for the song with a U.S. R&B 23 rank?
SQL: SELECT "u_s_rap" FROM "singles" WHERE "u_s_r_b"='23';

Question: What is the U.S. R&B rank in 2003?
SQL: SELECT "u_s_r_b" FROM "singles" WHERE "year"=2003;