Translate the following inference to logic notation: For all x, x will drink water or x is not a sailor. For all x, x is a sailor or x will not drink water. There is at least one x for which x is not a sailor. Therefore there is at least one x for which x will not drink water.
forall x: P(x) or ~Q(x). forall x: Q(x) or ~P(x). exists x: ~Q(x). Therefore exists x: ~P(x).