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, x_15 will read a book. For all x_16, if x_16 drives a car, then x_16 is playing squash. For all x_16, if x_16 reads a book, then x_16 is driving a car.
For all x_16, if x_16 reads a book, then x_16 is playing squash.