What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_15, if x_15 listens to a song, then x_15 is running. For all x_15, if x_15 goes running, then x_15 is driving a car. For all x_15, if x_15 cooks, then x_15 is running. For all x_15, x_15 will drive a car if and only if x_15 will write a letter. For all x_15, x_15 will read a book or x_15 will cook. For all x_15, if x_15 reads a book, then x_15 is listening to a song.
For all x_15, if x_15 listens to a song, then x_15 is driving a car. For all x_15, if x_15 cooks, then x_15 is driving a car. For all x_15, if x_15 reads a book, then x_15 is running. For all x_15, if x_15 drives a car, then x_15 is writing a letter. For all x_15, if x_15 writes a letter, then x_15 is driving a car.