Translate the following inference to logic notation: For all x, if x_5 were a sailor, then x_5 is climbing a mountain. For all x, x_5 is a sailor if and only if x_5 is rich. For all x, x_5 will not climb a mountain. Therefore for all x, x_5 is not rich.
forall x: P(x) -> Q(x). forall x: P(x) <-> R(x). forall x: ~Q(x). Therefore forall x: ~R(x).