What are the first and last names of all drivers who participated in the Australian Grand Prix but not the Chinese Grand Prix?
select t3.forename, t3.surname from races as t1 join results as t2 on t1.raceid = t2.raceid join drivers as t3 on t2.driverid = t3.driverid where t1.name = "Australian grand Prix" except select t3.forename, t3.surname from races as t1 join results as t2 on t1.raceid = t2.raceid join drivers as t3 on t2.driverid = t3.driverid where t1.name = "Chinese grand Prix"