Translate the following inference to logic notation: There is at least one x for which if x_13 were a mechanic, then x_13 is driving a car. For all x, if x_13 writes a letter, then x_13 is playing tennis. For all x, x_13 is an astronaut or x_13 will write a letter. For all x, x_13 is a mechanic. For all x, if x_13 were an astronaut, then x_13 is playing tennis. Therefore there is at least one x for which x_13 will play tennis and x_13 will drive a car.
exists x: P(x) -> Q(x). forall x: R(x) -> S(x). forall x: T(x) or R(x). forall x: P(x). forall x: T(x) -> S(x). Therefore exists x: S(x) and Q(x).