Translate the following inference to logic notation: For all x, if y were a taxi driver, then y is taking a plane. For all x, if y drinks water, then y is a taxi driver. For all x, y will not drink water. For all x, if y takes a plane, then y is drinking water. Therefore for all x, y will not take a plane.
forall x: P(x) -> Q(x). forall x: R(x) -> P(x). forall x: ~R(x). forall x: Q(x) -> R(x). Therefore forall x: ~Q(x).