What is day 4 when day 2 is PAAQ?
CREATE TABLE "first_semester" (
  "day_1" text,
  "day_2" text,
  "day_3" text,
  "day_4" text,
  "day_5" text,
  "wednesday" text
);
SELECT "day_4" FROM "first_semester" WHERE "day_2"='paaq';