Question: What is the number of vacators when the successor was William H. Wells ( F )?
SQL: SELECT COUNT("Vacator") FROM "1-224839-3" WHERE "Successor" = 'William H. Wells ( F )';

Question: What is the total number of dates of successor formal installation when the vacator was Joshua Clayton ( F )?
SQL: SELECT COUNT("Date of successors formal installation") FROM "1-224839-3" WHERE "Vacator" = 'Joshua Clayton ( F )';

Question: What is the total number of successors when the vacator was William North ( F )
SQL: SELECT COUNT("Successor") FROM "1-224839-3" WHERE "Vacator" = 'William North ( F )';

Question: What are all the states (class) when the successor was Joseph Anderson ( DR )?
SQL: SELECT "State (class)" FROM "1-224839-3" WHERE "Successor" = 'Joseph Anderson ( DR )';

Question: What are all the states (class) when the reason for change was Resigned November 26, 1798 and the vacator was John Hunter ( DR )?
SQL: SELECT "State (class)" FROM "1-224839-3" WHERE "Reason for change" = 'Resigned November 26, 1798' AND "Vacator" = 'John Hunter ( DR )';