CREATE TABLE "teams" (
  "round" text,
  "clubs_remaining" real,
  "clubs_involved" real,
  "winners_from_previous_round" text,
  "new_entries_this_round" text,
  "leagues_entering_at_this_round" text
);

Question: Which leagues entered in rounds where there were 16 winners from the previous round?
SQL: SELECT "leagues_entering_at_this_round" FROM "teams" WHERE "winners_from_previous_round"='16';

Question: Which rounds had 32 clubs involved?
SQL: SELECT "round" FROM "teams" WHERE "clubs_involved"=32;

Question: Which round had 24 new entries?
SQL: SELECT "round" FROM "teams" WHERE "new_entries_this_round"='24';

Question: Which leagues entered an extra preliminary round?
SQL: SELECT "leagues_entering_at_this_round" FROM "teams" WHERE "round"='Extra Preliminary Round';