Table: vacancy_successors_3
Columns: district
vacator
reason_for_change
successor
date_successor_seated

Question: How many reasons for change were listed when Edward Hempstead was the successor?
SQL: SELECT COUNT("reason_for_change") FROM vacancy_successors_3 WHERE "successor" = 'Edward Hempstead'

Question: How many Vacators were listed when the district was North Carolina 3rd?
SQL: SELECT COUNT("vacator") FROM vacancy_successors_3 WHERE "district" = 'North Carolina 3rd'

Question: Who was the vacator when Shadrach Bond was the successor?
SQL: SELECT "vacator" FROM vacancy_successors_3 WHERE "successor" = 'Shadrach Bond'