Translate the following inference to logic notation: For all x, x_7 will not read a book. For all x, x_7 will play tennis. For all x, x_7 will sleep if and only if x_7 will read a book. For all x, x_7 will not play tennis or x_7 will take a plane. Therefore for all x, x_7 will take a plane.
forall x: ~P(x). forall x: Q(x). forall x: R(x) <-> P(x). forall x: ~Q(x) or S(x). Therefore forall x: S(x).