CREATE TABLE "pool_a" (
  "date" text,
  "score" text,
  "set_1" text,
  "set_2" text,
  "set_3" text,
  "total" text
);

Question: Which Set 1 has a Set 2 of 26–24?
SQL: SELECT "set_1" FROM "pool_a" WHERE "set_2"='26–24';

Question: Which Set 2 has a Date of 25 may, and a Set 3 of 21–25?
SQL: SELECT "set_2" FROM "pool_a" WHERE "date"='25 may' AND "set_3"='21–25';

Question: Which Date has a Set 3 of 21–25?
SQL: SELECT "date" FROM "pool_a" WHERE "set_3"='21–25';

Question: Which Set 1 has a Date of 24 may, and a Total of 57–75?
SQL: SELECT "set_1" FROM "pool_a" WHERE "date"='24 may' AND "total"='57–75';

Question: Which Set 2 has a Set 1 of 25–15, and a Score of 3–0?
SQL: SELECT "set_2" FROM "pool_a" WHERE "set_1"='25–15' AND "score"='3–0';

Question: Which Total has a Set 1 of 25–22?
SQL: SELECT "total" FROM "pool_a" WHERE "set_1"='25–22';