What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_9, if x_9 plays tennis, then x_9 is driving a car. For all x_9, if x_9 writes a letter, then x_9 is an office clerk. For all x_9, x_9 will write a letter. For all x_9, if x_9 were an office clerk, then x_9 is working. For all x_9, if x_9 cooks, then x_9 is driving a car. For all x_9, x_9 will play tennis or x_9 will cook.
For all x_9, x_9 is an office clerk. For all x_9, if x_9 writes a letter, then x_9 is working. For all x_9, x_9 will drive a car.