Translate the following inference to logic notation: For all x, if x_4 were a lawyer, then x_4 is fast. Susan is not a lawyer. For all x, if x_4 were fast, then x_4 is a soldier. For all x, if x_4 were a soldier, then x_4 is a lawyer. Therefore Susan is not a soldier.
forall x: P(x) -> Q(x). ~P(a). forall x: Q(x) -> R(x). forall x: R(x) -> P(x). Therefore ~R(a).