Translate the following inference to logic notation: For all x, x_6 is a janitor or x_6 is an astronaut. For all x, x_6 is not a janitor. For all x, x_6 will drive a car or x_6 is not an astronaut. Therefore for all x, x_6 will drive a car.
forall x: P(x) or Q(x). forall x: ~P(x). forall x: R(x) or ~Q(x). Therefore forall x: R(x).