Translate the following inference to logic notation: For all x, x_5 is an electrician. There is at least one x for which x_5 will make tea. For all x, if x_5 were an electrician, then x_5 is an astronaut. For all x, if x_5 were an astronaut, then x_5 is reading a book. Therefore there is at least one x for which x_5 will make tea and x_5 will read a book.
forall x: P(x). exists x: Q(x). forall x: P(x) -> R(x). forall x: R(x) -> S(x). Therefore exists x: Q(x) and S(x).