Translate the following inference to logic notation: There is at least one x for which x_11 is an artist. For all x, x_11 is a soldier if and only if x_11 is an artist. For all x, x_11 is not a soldier. Therefore there is at least one x for which x_11 is poor.
exists x: P(x). forall x: Q(x) <-> P(x). forall x: ~Q(x). Therefore exists x: R(x).