Translate the following inference to logic notation: For all x, x_9 will not drink water. There is at least one x for which x_9 will drink water if and only if x_9 is a soldier. For all x, x_9 is a soldier or x_9 will not play squash. Therefore there is at least one x for which x_9 will not play squash.
forall x: ~P(x). exists x: P(x) <-> Q(x). forall x: Q(x) or ~R(x). Therefore exists x: ~R(x).