Translate the following inference to logic notation: For all x, x_12 is not an electrician. For all x, x_12 is an office clerk if and only if x_12 will read a book. For all x, x_12 will read a book if and only if x_12 is an electrician. For all x, x_12 is an office clerk or x_12 will make tea. Therefore for all x, x_12 will make tea.
forall x: ~P(x). forall x: Q(x) <-> R(x). forall x: R(x) <-> P(x). forall x: Q(x) or S(x). Therefore forall x: S(x).