Translate the following inference to logic notation: For all x, if x_7 plays tennis, then x_7 is a politician. For all x, if x_7 plays squash, then x_7 is playing tennis. For all x, x_7 will play squash and x_7 will drive a car. Therefore for all x, x_7 is a politician.
forall x: P(x) -> Q(x). forall x: R(x) -> P(x). forall x: R(x) and S(x). Therefore forall x: Q(x).