Table: governor_changes
Columns: state_class
vacator
reason_for_change
successor
date_of_successors_formal_installation

Question: in which state where John Laurance (f) as a vacator?
SQL: SELECT "state_class" FROM governor_changes WHERE "vacator" = 'John Laurance (F)'

Question: when the vacator was Henry Latimer (f), what were the causes for modification?
SQL: SELECT "reason_for_change" FROM governor_changes WHERE "vacator" = 'Henry Latimer (F)'

Question: how many times has Aaron Ogden (f), been a successor and has had a formal installation? 
SQL: SELECT COUNT("date_of_successors_formal_installation") FROM governor_changes WHERE "successor" = 'Aaron Ogden (F)'