Translate the following inference to logic notation: There is at least one x for which if x_6 sleeps, then x_6 is a sailor. For all x, if x_6 drinks water, then x_6 is an artist. For all x, x_6 is a sailor or x_6 is not an artist. For all x, x_6 will sleep or x_6 will drink water. Therefore there is at least one x for which x_6 is a sailor.
exists x: P(x) -> Q(x). forall x: R(x) -> S(x). forall x: Q(x) or ~S(x). forall x: P(x) or R(x). Therefore exists x: Q(x).