What is the total number of staff members?
select count ( * ) from staff
What is the last name of the staff member with the first name "Janessa"?
select last_name from staff where first_name = "Janessa"
What is the birthday of the staff member with the first and last name as Janessa and Sawayn?
select date_of_birth from staff where first_name = "Janessa" and last_name = "Sawayn"