Translate the following inference to logic notation: For all x, if x_18 were an office clerk, then x_18 is a soldier. For all x, if x_18 were a soldier, then x_18 is an office clerk. For all x, x_18 is an office clerk. Therefore Sarah is a soldier or Susan is climbing a mountain.
forall x: P(x) -> Q(x). forall x: Q(x) -> P(x). forall x: P(x). Therefore Q(a) or p.