Translate the following inference to logic notation: For all x, x_7 is a poet if and only if x_7 will make tea. For all x, x_7 is not a poet. For all x, x_7 will make tea or x_7 will not play squash. Therefore for all x, x_7 will not play squash.
forall x: P(x) <-> Q(x). forall x: ~P(x). forall x: Q(x) or ~R(x). Therefore forall x: ~R(x).