Translate the following inference to logic notation: For all x, x_13 is not an electrician. For all x, x_13 will take a plane if and only if x_13 will drink water. Michael is taking a plane or John is a soldier. For all x, x_13 will drink water if and only if x_13 is an electrician. Therefore John is a soldier.
forall x: ~P(x). forall x: Q(x) <-> R(x). Q(a) or p. forall x: R(x) <-> P(x). Therefore p.