Translate the following inference to logic notation: For all x, x_7 will go running. For all x, x will read a book. For all x, if x_7 goes running, then x_7 is a musician. Therefore there is at least one x for which x will read a book.
forall x: P(x). forall x: Q(x). forall x: P(x) -> R(x). Therefore exists x: Q(x).