what is teaching language where the focus is auditing?
CREATE TABLE "postgraduate" (
  "program" text,
  "degree" text,
  "focus" text,
  "teaching_language" text,
  "duration_years" text,
  "full_time_part_time" text,
  "ects_credit_points" real
);
SELECT "teaching_language" FROM "postgraduate" WHERE "focus"='Auditing';