Translate the following inference to logic notation: For all x, if y_3 were a politician, then y_3 is a janitor. For all x, y_3 will drink water or y_3 is not a janitor. For all x, y_3 is a politician or y_3 will not drink water. Therefore for all x, if y_3 were a janitor, then y_3 is drinking water.
forall x: P(x) -> Q(x). forall x: R(x) or ~Q(x). forall x: P(x) or ~R(x). Therefore forall x: Q(x) -> R(x).