What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_10, if x_10 were a janitor, then x_10 is not climbing a mountain. For all x_10, x_10 will go running. There is at least one x_10 for which x_10 will not go running.
Nothing can be inferred from these premises.