Translate the following inference to logic notation: There is at least one x for which if x_7 were an electrician, then x_7 is working. For all x, x_7 will cook or x_7 will not work. For all x, x_7 is an electrician. Therefore there is at least one x for which x_7 will cook.
exists x: P(x) -> Q(x). forall x: R(x) or ~Q(x). forall x: P(x). Therefore exists x: R(x).