Translate the following inference to logic notation: For all x, x_3 is a doctor. For all x, x_3 is an electrician and x_3 is a nurse. Therefore for all x, x_3 is an electrician and x_3 is a doctor.
forall x: P(x). forall x: Q(x) and R(x). Therefore forall x: Q(x) and P(x).