Translate the following inference to logic notation: There is at least one x for which x_17 is not an electrician. For all x, x_17 is an electrician if and only if x_17 will drive a car. For all x, if x_17 drives a car, then x_17 is a scientist. For all x, if x_17 were a scientist, then x_17 is driving a car. For all x, x_17 will read a book if and only if x_17 is a scientist. Therefore there is at least one x for which x_17 will not read a book.
exists x: ~P(x). forall x: P(x) <-> Q(x). forall x: Q(x) -> R(x). forall x: R(x) -> Q(x). forall x: S(x) <-> R(x). Therefore exists x: ~S(x).