Translate the following inference to logic notation: For all x, z is an astronaut if and only if z is a server. For all x, z is not a server. For all x, z is an astronaut or z will not drive a car. Therefore for all x, z will not drive a car.
forall x: P(x) <-> Q(x). forall x: ~Q(x). forall x: P(x) or ~R(x). Therefore forall x: ~R(x).