Translate the following inference to logic notation: For all x, if x_6 were a cashier, then x_6 is an artist. For all x, x_6 is a soldier or x_6 is a cashier. For all x, if x_6 were an artist, then x_6 is a server. For all x, x_6 is an artist or x_6 is not a soldier. Therefore for all x, x_6 is a server.
forall x: P(x) -> Q(x). forall x: R(x) or P(x). forall x: Q(x) -> S(x). forall x: Q(x) or ~R(x). Therefore forall x: S(x).