CREATE TABLE "table1_225095_4" (
  "district" text,
  "vacator" text,
  "reason_for_change" text,
  "successor" text,
  "date_successor_seated" text
);

Question: How many reasons for change were listed when Edward Hempstead was the successor?
SQL: SELECT COUNT("reason_for_change") FROM "table1_225095_4" WHERE "successor"='Edward Hempstead';

Question: How many Vacators were listed when the district was North Carolina 3rd?
SQL: SELECT COUNT("vacator") FROM "table1_225095_4" WHERE "district"='North Carolina 3rd';

Question: Who was the vacator when Shadrach Bond was the successor?
SQL: SELECT "vacator" FROM "table1_225095_4" WHERE "successor"='Shadrach Bond';