Translate the following inference to logic notation: For all x, if x_13 goes running, then x_13 is an office clerk. For all x, x_13 is a taxi driver and x_13 will drink water. For all x, if x_13 were a nurse, then x_13 is an office clerk. There is at least one x for which x_13 is a nurse or x_13 will go running. Therefore there is at least one x for which x_13 is a taxi driver and x_13 is an office clerk.
forall x: P(x) -> Q(x). forall x: R(x) and S(x). forall x: T(x) -> Q(x). exists x: T(x) or P(x). Therefore exists x: R(x) and Q(x).