Translate the following inference to logic notation: For all x, if x_9 listens to a song, then x_9 is sad. For all x, if x_9 drinks water, then x_9 is driving a car. For all x, if x_9 were poor, then x_9 is drinking water. For all x, x_9 will listen to a song or x_9 will not drive a car. Therefore for all x, if x_9 were poor, then x_9 is sad.
forall x: P(x) -> Q(x). forall x: R(x) -> S(x). forall x: T(x) -> R(x). forall x: P(x) or ~S(x). Therefore forall x: T(x) -> Q(x).