Translate the following inference to logic notation: For all x, x_12 is a sailor if and only if x_12 will play a game. For all x, x_12 will read a book. For all x, x_12 will not play a game. For all x, if x_12 goes running, then x_12 is taking a plane. For all x, x_12 is a sailor or x_12 will go running. Therefore for all x, x_12 will take a plane and x_12 will read a book.
forall x: P(x) <-> Q(x). forall x: R(x). forall x: ~Q(x). forall x: S(x) -> T(x). forall x: P(x) or S(x). Therefore forall x: T(x) and R(x).