Translate the following inference to logic notation: For all x, if x_6 works, then x_6 is a politician. For all x, x_6 will drink water. For all x, if x_6 were a politician, then x_6 is playing squash. For all x, x_6 will work. Therefore for all x, x_6 will play squash.
forall x: P(x) -> Q(x). forall x: R(x). forall x: Q(x) -> S(x). forall x: P(x). Therefore forall x: S(x).