Translate the following inference to logic notation: For all x, x_16 will not play squash or x_16 will drink water. For all x, x_16 is an artist if and only if x_16 is a writer. For all x, if x_16 climbs a mountain, then x_16 is an astronaut. For all x, if x_16 drinks water, then x_16 is climbing a mountain. For all x, x_16 will play squash or x_16 is an artist. There is at least one x for which if x_16 were an astronaut, then x_16 is a writer. Therefore there is at least one x for which x_16 is a writer.
forall x: ~P(x) or Q(x). forall x: R(x) <-> S(x). forall x: T(x) -> U(x). forall x: Q(x) -> T(x). forall x: P(x) or R(x). exists x: U(x) -> S(x). Therefore exists x: S(x).