CREATE TABLE "1405_1482" (
  "name" text,
  "father" text,
  "birth" text,
  "marriage" text,
  "became_countess" text,
  "ceased_to_be_countess" text,
  "death" text,
  "spouse" text
);

Question: When did the person born on 3 May 1446 cease to be countess?
SQL: SELECT "ceased_to_be_countess" FROM "1405_1482" WHERE "birth"='3 may 1446';

Question: Who was the father of the person born in 1363?
SQL: SELECT "father" FROM "1405_1482" WHERE "birth"='1363';

Question: When was the marriage of the person who died on 17 December 1471?
SQL: SELECT "marriage" FROM "1405_1482" WHERE "death"='17 december 1471';