Translate the following inference to logic notation: For all x, x_11 will cook if and only if x_11 will drink water. For all x, x_11 will drink water or x_11 will not cook. Therefore if Richard cooks, then Richard is drinking water.
forall x: P(x) <-> Q(x). forall x: Q(x) or ~P(x). Therefore P(a) -> Q(a).