Translate the following inference to logic notation: For all x, if x_6 reads a book, then x_6 is a writer. For all x, x_6 will not make tea or x_6 will play squash. For all x, x_6 will play squash if and only if x_6 is a writer. For all x, x_6 will make tea or x_6 will read a book. Therefore for all x, x_6 is a writer.
forall x: P(x) -> Q(x). forall x: ~R(x) or S(x). forall x: S(x) <-> Q(x). forall x: R(x) or P(x). Therefore forall x: Q(x).