CREATE TABLE "literature" (
  "name" text,
  "deceased_spouse" text,
  "cause_of_death" text,
  "date_of_spouses_death" text,
  "length_of_marriage" text,
  "children_together" text,
  "current_marital_status" text
);

Question: What was the cause of death in the marriage that lasted 28 years? 
SQL: SELECT "cause_of_death" FROM "literature" WHERE "length_of_marriage"='28 years';

Question: How long were Ray Bradbury and his wife married?
SQL: SELECT "length_of_marriage" FROM "literature" WHERE "name"='Ray Bradbury';