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 drives a car, then x_9 is a poet. For all x_9, x_9 will drive a car if and only if x_9 will write a letter. For all x_9, if x_9 were a poet, then x_9 is writing a letter.
For all x_9, if x_9 drives a car, then x_9 is writing a letter. For all x_9, if x_9 drives a car, then x_9 is writing a letter. For all x_9, if x_9 writes a letter, then x_9 is driving a car.