CREATE TABLE "u_s_presidents" (
  "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: Who was the deceased spouse who was married for 4 years?
SQL: SELECT "deceased_spouse" FROM "u_s_presidents" WHERE "length_of_marriage"='4 years';

Question: Who were the children of Benjamin Harrison?
SQL: SELECT "children_together" FROM "u_s_presidents" WHERE "name"='Benjamin Harrison';