What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_16, x_16 will drive a car or x_16 will play tennis. There is at least one x_16 for which if x_16 plays tennis, then x_16 is climbing a mountain. For all x_16, if x_16 drives a car, then x_16 is climbing a mountain. For all x_16, if x_16 reads a book, then x_16 is a lawyer. For all x_16, if x_16 were a lawyer, then x_16 is not climbing a mountain.
There is at least one x_16 for which x_16 will climb a mountain.