Translate the following inference to logic notation: For all x, if x_11 reads a book, then x_11 is taking a plane. For all x, x_11 will listen to a song or x_11 will read a book. For all x, if x_11 takes a plane, then x_11 is running. For all x, x_11 will listen to a song if and only if x_11 will go running. Therefore for all x, x_11 will go running or x_11 is a sailor.
forall x: P(x) -> Q(x). forall x: R(x) or P(x). forall x: Q(x) -> S(x). forall x: R(x) <-> S(x). Therefore forall x: S(x) or T(x).