Translate the following inference to logic notation: For all x, x_11 is a writer if and only if x_11 will listen to a song. Richard is a writer if and only if Jennifer is running. For all x, x_11 will read a book. For all x, if x_11 listens to a song, then x_11 is not reading a book. Therefore Jennifer is not running.
forall x: P(x) <-> Q(x). P(a) <-> p. forall x: R(x). forall x: Q(x) -> ~R(x). Therefore ~p.