What is Name, when Royal House is "Ji", and when State is "Cai"?
CREATE TABLE "vassal_states" (
  "state" text,
  "type" text,
  "name" text,
  "title" text,
  "royal_house" text,
  "from" text
);
SELECT "name" FROM "vassal_states" WHERE "royal_house"='ji' AND "state"='cai';