What is Total, when Set 5 is NA, and when Set 2 is 25-13?
CREATE TABLE "results_pool_b" (
  "date" text,
  "score" text,
  "set_1" text,
  "set_2" text,
  "set_3" text,
  "set_4" text,
  "set_5" text,
  "total" text
);
SELECT "total" FROM "results_pool_b" WHERE "set_5"='na' AND "set_2"='25-13';