CREATE TABLE "fa_cup" (
  "date" text,
  "round" text,
  "opponents" text,
  "h_a" text,
  "result_f_a" text,
  "attendance" real
);

Question: Which round has an H/A of H?
SQL: SELECT "round" FROM "fa_cup" WHERE "h_a"='h';

Question: Rich round has an H/A of A and the opponent Sheffield United?
SQL: SELECT "round" FROM "fa_cup" WHERE "h_a"='a' AND "opponents"='sheffield united';